In previous examples of trigonometry we were limited to right triangles. Now let's see how trig works in oblique (not right) triangles.
|
|
- Lesley James
- 5 years ago
- Views:
Transcription
1 The law of sines. In previous examples of trigonometry we were limited to right triangles. Now let's see how trig works in oblique (not right) triangles. You may recall from Plane Geometry that if you know any of the following information, you have a unique triangle. 1. ASA or angle side angle. 2. AAS or angle angle side. 3. ASS or angle side side (this is a special case as we shall see) 4. SSS or side side side. 5. SAS or side angle side. The Law of Sines can be used with the first three of these ASA, AAS, and ASS. While the law of cosines (which we'll cover later) covers SSS and SAS. The point to remember here is that given any three values in the above list, the triangle's other sides and angles can be found because the triangle's shape is fixed once you know any of these combinations. Notice that there is no AAA angle angle angle rule. That's because three angles determines if triangles are similar, but without at least one side, they can be any size. First let's derive the law of sines. Suppose we have a triangle ABC with sides abc. If we drop a perpendicular line from C to side c we divide the triangle into two right triangles. if the perpendicular is h, and we look at the two triangles separately, we can see that sin ( A ) = h / b and that sin( B ) = a / h. Solving for h in both equations gives us: h = b sin( A ) and h = a sin( B ). since both are equal to h set them equal to each other, giving
2 b sin( A ) = a sin( B ). Rearranging these by dividing both sides by ab gives us the relationship between angles and sides in a triangle known as the law of sines. We could drop a perpendicular from A to side a and show that sin ( C ) / c is equal to sin ( B ) / b as well which covers all three sides and all three angles. In order to use the law of sines it is necessary to be given at least one angle and the length of the side opposite to it. and one other angle or side. This is the basic expression for the law of sines. Now let's see what it can do for us. Suppose we have a triangle and are given the following information:
3 This is an Angle-Side-Angle or (ASA) problem. Given an angle, an adjacent side and the next angle, find the third angle (angle C) and the two unknown sides (a and b). First find angle C. Since a triangle has 180 degrees, subtract the two angles we are given from 180 and we get 80. S o angle C is 80. Now we are ready to apply the law of sines as we have one angle and its opposite side (C and c)
4 This was an ASA or angle side angle solution. You can easily see that given an AAS or angle angle side, you would just as easily solve for the other angle and sides using the law of sines. As I mentioned above, ASS or angle side side is a special case that also uses the law or sines and that is because it gives rise to three possible results. 1. no triangle is possible. 2. there is only one triangle and 3. there are two possible solutions (this is called the ambiguous situation). Let's examine all three of these.
5 Suppose we were given the angle at A, the length of b and the length of a. I like to think of this as a fishing pole scene. Angle A (where the fisherman is sitting at the water's edge) is the angle of the pole, b is the length of the pole and a is the length of the fishing line swinging off the end of the pole. Think of AB as being the surface of the water. You can see from the diagram that if the fishing line a is too short, it will not reach the water at all. This means its possible to invent an ASS probelm that has no solution. If a does not touch the water at some point (B) a triangle doesn't form. So how do we make sure that, given specific numbers angle A, side b and side a we actually have a triangle at all. Drop a height from C down to side AB. Then use the sin (A) = h / b to solve for h. This h is the shortest distance between C and line AB. If a is shorter than that line, then it cannot possibly reach AB and there is no triagle formed... ie no solution.
6 If a is exactly = to h, then the solution is a right triangle and it is then easy to calculate the remaining angle at C and the length of c which is AB. But suppose a is longer than h. Then we know we have at least one solution. Let me draw that solution. Now this is where we have to decide if we have two solutions of one solution. ie answer the question Is this an ambiguous solution? Look at the following diagrams and realize that it is possible to get either one solution or two solutions.
7
8 These are the two solution triangles. That's the theory. Now let's do an example of this ambiguous situation step by step. Given the ASS triangle angle = 55, side b = 37 and side a = 35.
9 At this point we have calculated angle B in the first triangle. Now
10 we can calculate angle C by subtracting ( ) = Now use the law of sines again to find side c in this first triangle. This concludes the first triangle. The second triangle starts by using the angle B1 to calculate angle B2.
11 This concludes the calculations for both triangles in the ambiguous case for the law of sines.
12
8.1 The Law of Sines Congruency and Oblique Triangles Using the Law of Sines The Ambiguous Case Area of a Triangle
Chapter 8 Applications of Trigonometry 8-1 8.1 The Law of Sines Congruency and Oblique Triangles Using the Law of Sines The Ambiguous Case Area of a Triangle A triangle that is not a right triangle is
More informationThe statements of the Law of Cosines
MSLC Workshop Series: Math 1149 and 1150 Law of Sines & Law of Cosines Workshop There are four tools that you have at your disposal for finding the length of each side and the measure of each angle of
More informationBASICS OF TRIGONOMETRY
Mathematics Revision Guides Basics of Trigonometry Page 1 of 9 M.K. HOME TUITION Mathematics Revision Guides Level: GCSE Foundation Tier BASICS OF TRIGONOMETRY Version: 1. Date: 09-10-015 Mathematics Revision
More information8.7 Extension: Laws of Sines and Cosines
www.ck12.org Chapter 8. Right Triangle Trigonometry 8.7 Extension: Laws of Sines and Cosines Learning Objectives Identify and use the Law of Sines and Cosines. In this chapter, we have only applied the
More information1. A right triangle has legs of 8 centimeters and 13 centimeters. Solve the triangle completely.
9.7 Warmup 1. A right triangle has legs of 8 centimeters and 13 centimeters. Solve the triangle completely. 2. A right triangle has a leg length of 7 in. and a hypotenuse length of 14 in. Solve the triangle
More informationUnit 2 Day 4 Notes Law of Sines
AFM Unit 2 Day 4 Notes Law of Sines Name Date Introduction: When you see the triangle below on the left and someone asks you to find the value of x, you immediately know how to proceed. You call upon your
More informationModule 13 Trigonometry (Today you need your notes)
Module 13 Trigonometry (Today you need your notes) Question to ponder: If you are flying a kite, you know the length of the string, and you know the angle that the string is making with the ground, can
More informationChapter 3: Trigonometry
: Unit 3&4 - Trigonometry Chapter 3: Trigonometry 3.10 Sine or Cosine? Sine Law Cosine Law ASA or AAS SAS ASS SSS Example #1: 12 70 9 Example #2: 17 35 14 1) 2) 3) Solve each triangle ABC. Round answers
More informationApplication of Geometric Mean
Section 8-1: Geometric Means SOL: None Objective: Find the geometric mean between two numbers Solve problems involving relationships between parts of a right triangle and the altitude to its hypotenuse
More informationToday we will focus on solving for the sides and angles of non-right triangles when given two angles and a side.
5.5 The Law of Sines: Part 1 Pre-Calculus Learning Targets: 1. Use the Law of Sines to solve non-right triangles. Today we will focus on solving for the sides and angles of non-right triangles when given
More informationAlgebra/Geometry Blend Unit #7: Right Triangles and Trigonometry Lesson 1: Solving Right Triangles. Introduction. [page 1]
Algebra/Geometry Blend Unit #7: Right Triangles and Trigonometry Lesson 1: Solving Right Triangles Name Period Date Introduction [page 1] Learn [page 2] Pieces of a Right Triangle The map Brian and Carla
More informationUnit 3 Trigonometry. 3.1 Use Trigonometry to Find Lengths
Topic : Goal : Unit 3 Trigonometry trigonometry I can use the primary trig ratios to find the lengths of sides in a right triangle 3.1 Use Trigonometry to Find Lengths In any right triangle, we name the
More informationLearning Goal: I can explain when to use the Sine, Cosine and Tangent ratios and use the functions to determine the missing side or angle.
MFM2P Trigonometry Checklist 1 Goals for this unit: I can solve problems involving right triangles using the primary trig ratios and the Pythagorean Theorem. U1L4 The Pythagorean Theorem Learning Goal:
More informationMath Section 4.1 Special Triangles
Math 1330 - Section 4.1 Special Triangles In this section, we ll work with some special triangles before moving on to defining the six trigonometric functions. Two special triangles are 30 60 90 triangles
More information8-1. The Pythagorean Theorem and Its Converse. Vocabulary. Review. Vocabulary Builder. Use Your Vocabulary
8-1 The Pythagorean Theorem and Its Converse Vocabulary Review 1. Write the square and the positive square root of each number. Number 9 Square Positive Square Root 1 4 1 16 Vocabulary Builder leg (noun)
More information8.3 Trigonometric Ratios-Tangent. Geometry Mr. Peebles Spring 2013
8.3 Trigonometric Ratios-Tangent Geometry Mr. Peebles Spring 2013 Bell Ringer 3 5 Bell Ringer a. 3 5 3 5 = 3 5 5 5 Multiply the numerator and denominator by 5 so the denominator becomes a whole number.
More informationI can add vectors together. IMPORTANT VOCABULARY
Pre-AP Geometry Chapter 9 Test Review Standards/Goals: G.SRT.7./ H.1.b.: I can find the sine, cosine and tangent ratios of acute angles given the side lengths of right triangles. G.SRT.8/ H.1.c.: I can
More information1 What is Trigonometry? Finding a side Finding a side (harder) Finding an angle Opposite Hypotenuse.
Trigonometry (9) Contents 1 What is Trigonometry? 1 1.1 Finding a side................................... 2 1.2 Finding a side (harder).............................. 2 1.3 Finding an angle.................................
More informationSpecial Right Triangles
GEOMETRY Special Right Triangles OBJECTIVE #: G.SRT.C.8 OBJECTIVE Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems. *(Modeling Standard) BIG IDEA (Why is
More informationMORE TRIGONOMETRY
MORE TRIGONOMETRY 5.1.1 5.1.3 We net introduce two more trigonometric ratios: sine and cosine. Both of them are used with acute angles of right triangles, just as the tangent ratio is. Using the diagram
More informationWelcome to Trigonometry!
Welcome to Trigonometry! Right Triangle Trigonometry: The study of the relationship between the sides and the angles of right triangles. Why is this important? I wonder how tall this cake is... 55 0 3
More informationA life not lived for others is not a life worth living. Albert Einstein
life not lived for others is not a life worth living. lbert Einstein Sides adjacent to the right angle are legs Side opposite (across) from the right angle is the hypotenuse. Hypotenuse Leg cute ngles
More informationSimilar Right Triangles
MATH 1204 UNIT 5: GEOMETRY AND TRIGONOMETRY Assumed Prior Knowledge Similar Right Triangles Recall that a Right Triangle is a triangle containing one 90 and two acute angles. Right triangles will be similar
More information8-1. The Pythagorean Theorem and Its Converse. Vocabulary. Review. Vocabulary Builder. Use Your Vocabulary
8-1 he Pythagorean heorem and Its Converse Vocabulary Review 1. Write the square and the positive square root of each number. Number Square Positive Square Root 9 81 3 1 4 1 16 1 2 Vocabulary Builder leg
More informationFunctions - Trigonometry
10. Functions - Trigonometry There are si special functions that describe the relationship between the sides of a right triangle and the angles of the triangle. We will discuss three of the functions here.
More information9.3 Altitude-on-Hypotenuse Theorems
9.3 Altitude-on-Hypotenuse Theorems Objectives: 1. To find the geometric mean of two numbers. 2. To find missing lengths of similar right triangles that result when an altitude is drawn to the hypotenuse
More informationUnit 2: Right Triangle Trigonometry RIGHT TRIANGLE RELATIONSHIPS
Unit 2: Right Triangle Trigonometry This unit investigates the properties of right triangles. The trigonometric ratios sine, cosine, and tangent along with the Pythagorean Theorem are used to solve right
More informationThe Law of Sines. Say Thanks to the Authors Click (No sign in required)
The Law of Sines Say Thanks to the Authors Click http://www.ck12.org/saythanks (No sign in required) To access a customizable version of this book, as well as other interactive content, visit www.ck12.org
More informationTrig Functions Learning Outcomes. Solve problems about trig functions in right-angled triangles. Solve problems using Pythagoras theorem.
1 Trig Functions Learning Outcomes Solve problems about trig functions in right-angled triangles. Solve problems using Pythagoras theorem. Opposite Adjacent 2 Use Trig Functions (Right-Angled Triangles)
More information3. Find x. 4. FG = 6. m EFG = 7. EH = 8. m FGH = 9. m GFH = 10. m FEH =
1/18 Warm Up Use the following diagram for numbers 1 2. The perpendicular bisectors of ABC meet at D. 1. Find DB. 2. Find AE. 22 B E A 14 D F G C B Use the following diagram for numbers 6. The angle bisectors
More informationGeom- Chpt. 8 Algebra Review Before the Chapter
Geom- Chpt. 8 Algebra Review Before the Chapter Solving Quadratics- Using factoring and the Quadratic Formula Solve: 1. 2n 2 + 3n - 2 = 0 2. (3y + 2) (y + 3) = y + 14 3. x 2 13x = 32 1 Working with Radicals-
More informationTrig Functions Learning Outcomes. Solve problems about trig functions in right-angled triangles. Solve problems using Pythagoras theorem.
1 Trig Functions Learning Outcomes Solve problems about trig functions in right-angled triangles. Solve problems using Pythagoras theorem. Opposite Adjacent 2 Use Trig Functions (Right-Angled Triangles)
More informationLaw Of Sines And Cosines Kuta
Cosines Kuta Free PDF ebook Download: Cosines Kuta Download or Read Online ebook law of sines and cosines kuta in PDF Format From The Best User Guide Database Solve application problems using the Law of
More informationSection 8: Right Triangles
The following Mathematics Florida Standards will be covered in this section: MAFS.912.G-CO.2.8 Explain how the criteria for triangle congruence (ASA, SAS, SSS, and Hypotenuse-Leg) follow from the definition
More informationStudent Instruction Sheet: Unit 4, Lesson 4. Solving Problems Using Trigonometric Ratios and the Pythagorean Theorem
Student Instruction Sheet: Unit 4, Lesson 4 Suggested Time: 75 minutes Solving Problems Using Trigonometric Ratios and the Pythagorean Theorem What s important in this lesson: In this lesson, you will
More information4.8/5.5/5.6 Right Triangle Trig Applications Law of Sines & Law of Cosines
Objective: 4.8/5.5/5.6 Right Triangle Trig Applications Law of Sines & Law of Cosines Apply right triangle trigonometry. Solve triangles using the Law of Sines and the Law of Cosines. WARMUP Find the missing
More informationUse SOH CAH TOA to memorize the three main trigonometric functions.
Use SOH CAH TOA to memorize the three main trigonometric functions. Content Objective Content Objective Content Objective Content Objective Content Objective Content Objective Content Objective Content
More informationPut in simplest radical form. (No decimals)
Put in simplest radical form. (No decimals) 1. 2. 3. 4. 5. 6. 5 7. 4 8. 6 9. 5 10. 9 11. -3 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 3 28. 1 Geometry Chapter 8 - Right Triangles
More informationA2.A.73: Law of Sines 4: Solve for an unknown side or angle, using the Law of Sines or the Law of Cosines
A2.A.73: Law of Sines 4: Solve for an unknown side or angle, using the Law of Sines or the Law of Cosines 1 In the accompanying diagram of ABC, m A = 65, m B = 70, and the side opposite vertex B is 7.
More information*Definition of Cosine
Vetors - Unit 3.3A - Problem 3.5A 3 49 A right triangle s hypotenuse is of length. (a) What is the length of the side adjaent to the angle? (b) What is the length of the side opposite to the angle? ()
More informationCongruence Axioms. Data Required for Solving Oblique Triangles. 1 of 8 8/6/ THE LAW OF SINES
1 of 8 8/6/2004 8.1 THE LAW OF SINES 8.1 THE LAW OF SINES Congrueny and Olique Triangles Derivation of the Law of Sines Appliations Amiguous Case Area of a Triangle Until now, our work with triangles has
More informationWeek 11, Lesson 1 1. Warm Up 2. Notes Sine, Cosine, Tangent 3. ICA Triangles
Week 11, Lesson 1 1. Warm Up 2. Notes Sine, Cosine, Tangent 3. ICA Triangles HOW CAN WE FIND THE SIDE LENGTHS OF RIGHT TRIANGLES? Essential Question Essential Question Essential Question Essential Question
More informationChapter 7. Right Triangles and Trigonometry
Chapter 7 Right Triangles and Trigonometry 4 16 25 100 144 LEAVE IN RADICAL FORM Perfect Square Factor * Other Factor 8 20 32 = = = 4 *2 = = = 75 = = 40 = = 7.1 Apply the Pythagorean Theorem Objective:
More informationArea And The Law Of Sines Tesccc
Area And The Tesccc Free PDF ebook Download: Area And The Tesccc Download or Read Online ebook area and the law of sines tesccc in PDF Format From The Best User Guide Database Holt Algebra 2. 13-5 The
More informationMath-3. Lesson 6-5 The Law of Sines The Ambiguous Case
Math-3 Lesson 6-5 The Law of Sines The miguous Case Quiz 6-4: 1. Find the measure of angle θ. Ө = 33.7 2. What is the cosecant ratio for ϴ? Csc Ө = 2 5 5 3. standard position angle passes through the point
More informationSin, Cos, and Tan Revealed
Sin, Cos, and Tan Revealed Reference Did you ever wonder what those keys on your calculator that say sin, cos, and tan are all about? Well, here s where you find out. You ve seen that whenever two right
More informationApplying Trigonometry: Angles of Depression and Elevation
Applying Trigonometry: Angles of Depression and Elevation An angle of elevation is the angle formed by a horizontal line and the line of sight to a point above. In the diagram, 1 is the angle of elevation.
More informationAP Physics 1 Summer Packet Review of Trigonometry used in Physics
AP Physics 1 Summer Packet Review of Trigonometry used in Physics For some of you this material will seem pretty familiar and you will complete it quickly. For others, you may not have had much or any
More informationReview on Right Triangles
Review on Right Triangles Identify a Right Triangle Example 1. Is each triangle a right triangle? Explain. a) a triangle has side lengths b) a triangle has side lengths of 9 cm, 12 cm, and 15 cm of 5 cm,7
More information77.1 Apply the Pythagorean Theorem
Right Triangles and Trigonometry 77.1 Apply the Pythagorean Theorem 7.2 Use the Converse of the Pythagorean Theorem 7.3 Use Similar Right Triangles 7.4 Special Right Triangles 7.5 Apply the Tangent Ratio
More informationTrigonometric Functions
Trigonometric Functions (Chapters 6 & 7, 10.1, 10.2) E. Law of Sines/Cosines May 21-12:26 AM May 22-9:52 AM 1 degree measure May 22-9:52 AM Measuring in Degrees (360 degrees) is the angle obtained when
More information4-7 The Law of Sines and the Law of Cosines
Solve each triangle. Round side lengths to the nearest tenth and angle measures to the nearest degree. 27. ABC, if A = 42, b = 12, and c = 19 Use the Law of Cosines to find the missing side measure. Use
More informationUNIT 2 RIGHT TRIANGLE TRIGONOMETRY Lesson 2: Applying Trigonometric Ratios Instruction
Prerequisite Skills This lesson requires the use of the following skills: defining and calculating sine, cosine, and tangent setting up and solving problems using the Pythagorean Theorem identifying the
More informationLesson 30, page 1 of 9. Glencoe Geometry Chapter 8.3. Trigonometric Ratios
Lesson 30 Lesson 30, page 1 of 9 Glencoe Geometry Chapter 8.3 Trigonometric Ratios Today we look at three special ratios of right triangles. The word Trigonometry is derived from two Greek words meaning
More informationEQ: SRT.8 How do I use trig to find missing side lengths of right triangles?
EQ: SRT.8 How do I use trig to find missing side lengths of right triangles? Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Essential
More informationOVERVIEW Similarity Leads to Trigonometry G.SRT.6
OVERVIEW Similarity Leads to Trigonometry G.SRT.6 G.SRT.6 Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric
More informationParallel Lines Cut by a Transversal
Name Date Class 11-1 Parallel Lines Cut by a Transversal Parallel Lines Parallel Lines Cut by a Transversal A line that crosses parallel lines is a transversal. Parallel lines never meet. Eight angles
More informationLaw Of Sines Ambiguous Case Worksheet 7 2
Case Worksheet 7 2 Free PDF ebook Download: Case Worksheet 7 2 Download or Read Online ebook law of sines ambiguous case worksheet 7 2 in PDF Format From The Best User Guide Database Worksheet by Kuta
More informationThe Battleship North Carolina s Fire Control
The Battleship North Carolina s Fire Control Objectives: 1. Students will see the application of trigonometry that the Mark 14 gun sight used with the 20mm guns aboard the NC Battleship. (Geometry SCOS:
More informationParking Lot HW? Joke of the Day: What do you get when you combine a flat, infinite geometric figure with a beef patty?
Parking Lot HW? Joke of the Day: What do you get when you combine a flat, infinite geometric figure with a beef patty? a plane burger Agenda 1 23 hw? Finish Special Right Triangles L8 3 Trig Ratios HW:
More informationRight-angled triangles and trigonometry
Right-angled triangles and trigonometry 5 syllabusref Strand: Applied geometry eferenceence Core topic: Elements of applied geometry In this cha 5A 5B 5C 5D 5E 5F chapter Pythagoras theorem Shadow sticks
More informationLesson 21: Special Relationships within Right Triangles Dividing into Two Similar Sub-Triangles
: Special Relationships within Right Triangles Dividing into Two Similar Sub-Triangles Learning Targets I can state that the altitude of a right triangle from the vertex of the right angle to the hypotenuse
More informationUnit 4. Triangle Relationships. Oct 3 8:20 AM. Oct 3 8:21 AM. Oct 3 8:26 AM. Oct 3 8:28 AM. Oct 3 8:27 AM. Oct 3 8:27 AM
Unit 4 Triangle Relationships 4.1 -- Classifying Triangles triangle -a figure formed by three segments joining three noncollinear points Classification of triangles: by sides by angles Oct 3 8:20 AM Oct
More informationLearning Objectives Source/Example Questions
Grade and Strand Learning Objectives Source/Example Questions.ca Ascent Education: http://questions.ascenteducatio n.com.ca A tree 66 meters high casts a 44-meter shadow. Find the angle of elevation of
More informationRight is Special 1: Triangles on a Grid
Each student in your group should have a different equilateral triangle. Complete the following steps: Using the centimeter grid paper, determine the length of the side of the triangle. Write the measure
More informationTrigonometry. terminal ray
terminal ray y Trigonometry Trigonometry is the study of triangles the relationship etween their sides and angles. Oddly enough our study of triangles egins with a irle. r 1 θ osθ P(x,y) s rθ sinθ x initial
More informationEQ: How do I use trigonometry to find missing side lengths of right triangles?
EQ: How do I use trigonometry to find missing side lengths of right triangles? Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Essential
More informationTitle: Direction and Displacement
Title: Direction and Displacement Subject: Mathematics Grade Level: 10 th 12 th Rational or Purpose: This activity will explore students knowledge on directionality and displacement. With the use angle
More information84 Geometric Mean (PAAP and HLLP)
84 Geometric Mean (PAAP and HLLP) Recall from chapter 7 when we introduced the Geometric Mean of two numbers. Ex 1: Find the geometric mean of 8 and 96.ÿ,. dÿ,... : J In a right triangle, an altitude darn
More informationThe study of the measurement of triangles is called Trigonometry.
Math 10 Workplace & Apprenticeship 7.2 The Sine Ratio Day 1 Plumbers often use a formula to determine the lengths of pipes that have to be fitted around objects. Some common terms are offset, run, and
More informationChapter 10. Right Triangles
Chapter 10 Right Triangles If we looked at enough right triangles and experimented a little, we might eventually begin to notice some relationships developing. For instance, if I were to construct squares
More informationWord problems introduce two new vocabulary terms:
Worksheet 1-3: Angle of Elevation vs. Angle of Depression Trigonometry is used on a daily basis in the workplace. Since trigonometry means "triangle measure", any profession that deals with measurement
More informationApplications of trigonometry
Applications of trigonometry This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,
More informationSec 9.5. Applications of Trigonometry to Navigation and Surveying
Sec 9.5 Applications of Trigonometry to Navigation and Surveying Which direction? In basic Trig standard position: Which direction? Navigation used by ships, planes etc. 9.5 Applications of Trigonometry
More informationSHOT ON GOAL. Name: Football scoring a goal and trigonometry Ian Edwards Luther College Teachers Teaching with Technology
SHOT ON GOAL Name: Football scoring a goal and trigonometry 2006 Ian Edwards Luther College Teachers Teaching with Technology Shot on Goal Trigonometry page 2 THE TASKS You are an assistant coach with
More information5.8. Solving Three-Dimensional Problems by Using Trigonometry. LEARN ABOUT the Math. Matt s Solution. 328 Chapter 5
YOU WILL NEE dynamic geometry software (optional) Solving Tree-imensional Problems by Using Trigonometry GOL Solve tree-dimensional problems by using trigonometry. LERN OUT te Mat From point, Manny uses
More informationPythagorean Theorem Name:
Name: 1. A wire reaches from the top of a 13-meter telephone pole to a point on the ground 9 meters from the base of the pole. What is the length of the wire to the nearest tenth of a meter? A. 15.6 C.
More informationVectors in the City Learning Task
Vectors in the City Learning Task Amy is spending some time in a city that is laid out in square blocks. The blocks make it very easy to get around so most directions are given in terms of the number of
More informationCK-12 Geometry: Special Right Triangles
CK-12 Geometry: Special Right Triangles Learning Objectives Identify and use the ratios involved with isosceles right triangles. Identify and use the ratios involved with 30-60-90 triangles. Review Queue
More informationTopic 15 - Guided Assessment#1-10 & More Practice #1-10 Jan 28 - Jan 31, 2014
2/0/4 2:8 PM Topic 5 - Guie Assessment#-0 & More Practice #-0 Jan 28 - Jan 3, 204 Teacher: Melva Yazzie Topic 5 - Guie Assessment#-0 & More Practice #-0 5. Right triangle an trig relationships Course:
More informationMixed Trig Problems. For each problem show a complete solution with diagrams that include all the pertinent facts and answers.
Mixed Trig Problems For each problem show a complete solution with diagrams that include all the pertinent facts In ABC, cos A = 0.6. Find sin A and tan A. In ABC, cos A = 0.6. Find sin A and tan A. Sin
More informationDate: Period: Directions: Answer the following questions completely on a separate sheet of paper.
Name: Right Triangle Review Sheet Date: Period: Geometry Honors Directions: Answer the following questions completely on a separate sheet of paper. Part One: Simplify the following radicals. 1) 2) 3) 4)
More informationThe Pythagorean Theorem Diamond in the Rough
The Pythagorean Theorem SUGGESTED LEARNING STRATEGIES: Shared Reading, Activating Prior Knowledge, Visualization, Interactive Word Wall Cameron is a catcher trying out for the school baseball team. He
More informationChapter 8: Right Triangles (page 284)
hapter 8: Right Triangles (page 284) 8-1: Similarity in Right Triangles (page 285) If a, b, and x are positive numbers and a : x = x : b, then x is the between a and b. Notice that x is both in the proportion.
More informationSection 4.2 Objectives
Section 4. Objectives Determine whether the slope of a graphed line is positive, negative, 0, or undefined. Determine the slope of a line given its graph. Calculate the slope of a line given the ordered
More informationChapter 3: Trigonometry !! =!! +!!!"#!"#$
3.11 Sine or Cosine Word Problems Chapter 3: Trigonometry Basic Trig Ratios Geometry Rules!"#!"#!"#!"#$%&!"!!"#$%&'( =!"# Sine Law Cosine Law!!"#! =!!"#! =!!"#!!! =!! +!!!"#!"#$ Example #1 Two security
More informationUnit 7 Trigonometry Test #1 Review
Secondary Math 3 Name x 2^0Y1T9l NKYu]tga\ gsgovfztywdamr]e _LYLrg.n j HDlRls TrgiUgMhntvsZ TryedsUearbverdz. Unit 7 Trigonometry Test #1 Review Find the value of the trig function indicated. Date Period
More informationHonors Geometry Chapter 8 Test Review
Honors Geometry Chapter 8 Test Review Name Find the geometric mean between each pair of numbers. 1. 9 and 14 2. 20 and 80 3. 8 2 3 and 4 2 3 4. Find x, y and z. 5. Mike is hanging a string of lights on
More informationWarm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up
Solve applied problems using the attributes of similar triangles. Solve problems using ratio and proportions. Investigate the fundamental concepts behind trigonometry: three basic trig functions and how
More informationDate Lesson Assignment Did it grade Friday Feb.24
PAP Pre-Calculus Lesson Plans Unit Sem 2 3 rd term Johnston (C4) and Noonan (C6) February 24 th to March 9 th 202 - Vectors Date Lesson Assignment Did it grade Friday Feb.24 Law of Sines/Cosines, Area
More information5.5 Use Inequalities in a Triangle
5.5 Use Inequalities in a Triangle Goal p Find possible side lengths of a triangle. Your Notes Example 1 Relate side length and angle measure Mark the largest angle, longest side, smallest angle, and shortest
More informationName: Class: Date: Geometry Chapter 4 Test Review
Name: Class: Date: ID: C Geometry Chapter 4 Test Review. 1. Determine the measure of angle UPM in the following figure. Explain your reasoning and show all your work. 3. Determine the side length of each
More informationStudent Resource / Program Workbook INTEGERS
INTEGERS Integers are whole numbers. They can be positive, negative or zero. They cannot be decimals or most fractions. Let us look at some examples: Examples of integers: +4 0 9-302 Careful! This is a
More informationCHAPTER IV FINITE ELEMENT ANALYSIS OF THE KNEE JOINT WITHOUT A MEDICAL IMPLANT
39 CHAPTER IV FINITE ELEMENT ANALYSIS OF THE KNEE JOINT WITHOUT A MEDICAL IMPLANT 4.1 Modeling in Biomechanics The human body, apart of all its other functions is a mechanical mechanism and a structure,
More informationAdvanced Hydraulics Prof. Dr. Suresh A. Kartha Department of Civil Engineering Indian Institute of Technology, Guwahati
Advanced Hydraulics Prof. Dr. Suresh A. Kartha Department of Civil Engineering Indian Institute of Technology, Guwahati Module - 4 Hydraulics Jumps Lecture - 4 Features of Hydraulic Jumps (Refer Slide
More informationAbout Finish Line PA Core Math 5
Table of COntents About Finish Line PA Core Math 5 Unit 1: Big Ideas from Grade 4 7 Lesson 1 CC.2.1.4.B.2 Multiplying and Dividing Whole Numbers [connects to CC.2.1.5.B.2] 8 Lesson 2 CC.2.1.4.C.3 Understanding
More informationTRAINING LAB BLOOD AS EVIDENCE BLOOD DROPS FALLING AT AN ANGLE NAME
TRAINING LAB BLOOD AS EVIDENCE BLOOD DROPS FALLING AT AN ANGLE NAME Background: You just completed studying the behavior of passive blood drops that drip straight down from a wound, but not all blood drops
More informationDeriving the Law of Cosines
Name lass Date 14. Law of osines Essential Question: How can you use the Law of osines to find measures of any triangle? Resource Locker Explore Deriving the Law of osines You learned to solve triangle
More informationWorksheet 1.1 Kinematics in 1D
Worksheet 1.1 Kinematics in 1D Solve all problems on your own paper showing all work! 1. A tourist averaged 82 km/h for a 6.5 h trip in her Volkswagen. How far did she go? 2. Change these speeds so that
More informationS0300-A6-MAN-010 CHAPTER 2 STABILITY
CHAPTER 2 STABILITY 2-1 INTRODUCTION This chapter discusses the stability of intact ships and how basic stability calculations are made. Definitions of the state of equilibrium and the quality of stability
More information