name the sides of the triangles: opp, adj,...
TRANSCRIPT
Day 2 2017sine and cosine no appl problems.notebook
1
June 27, 2017
Jan 75:57 PM
Name the sides of the triangles: opp, adj, hyp
Day 2 2017sine and cosine no appl problems.notebook
2
June 27, 2017
Jan 75:58 PM
Solve for x
10x
7
x30
15
1.2.
Day 2 2017sine and cosine no appl problems.notebook
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June 27, 2017
Jan 75:58 PM
8
x30
Day 2 2017sine and cosine no appl problems.notebook
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June 27, 2017
Apr 83:06 PM
Before today's lesson, let's review the tangent ratio
#1. Find the unknown angle to the nearest tenth of a degree
45 cm
28 cmθ
#2. Find the length of the side indicated to the nearest hundredth.
x39o
12 m
Day 2 2017sine and cosine no appl problems.notebook
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June 27, 2017
Jan 75:55 PM
2.4 & 2.5Sine and Cosine Ratio
Lesson Objective:
To solve for unknown sides and
angles in a right triange.
2.4 & 2.5Sine and Cosine Ratio
Day 2 2017sine and cosine no appl problems.notebook
6
June 27, 2017
Tangent Ratio Intro
2.4 Sine and Cosine to Calculate Angles
Lesson Focus: Applying Sine and Cosine Ratios to Calculate Angles
2.4 Sine and Cosinet Ratios to Calculate Angles
AB
C
θ
hypotenuse
oppo
site
adjacent
sin θ = oppositehypotenuse
cos θ = adjacenthypotenuse
Day 2 2017sine and cosine no appl problems.notebook
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June 27, 2017
Feb 112:27 PM
SOH CAH TOA
Day 2 2017sine and cosine no appl problems.notebook
8
June 27, 2017
Tangent Ratio Intro
2.4 Sine and Cosine to Calculate Angles
Lesson Focus: Applying Sine and Cosine Ratios to Calculate Angles
2.4 Sine and Cosinet Ratios to Calculate Angles
Example 1:
#1 Use the sine ratio to determine the measure of angle D to the nearest degree
#2. Use the cosine ratio to determine the measure of the angle D to the nearest degree.
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Day 2 2017sine and cosine no appl problems.notebook
9
June 27, 2017
Tangent Ratio Intro
2.4 Sine and Cosine to Calculate Angles
2.4 Sine and Cosinet Ratios to Calculate Angles
Example 2:Determine the measure of angle G to the nearest tenth of a degree.
Day 2 2017sine and cosine no appl problems.notebook
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June 27, 2017
Nov 49:01 AM
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Determine the length of BC to the nearest tenth of a centimeter.
Day 2 2017sine and cosine no appl problems.notebook
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June 27, 2017
Nov 49:02 AM
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Ex 2: Determine the length of DE to the nearest tenth of a cm.
Day 2 2017sine and cosine no appl problems.notebook
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June 27, 2017
Feb 112:54 PM
Calculate
Cos 45 =
Sin = 0.5
Day 2 2017sine and cosine no appl problems.notebook
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June 27, 2017
Nov 49:03 AM
Chapters 2.4 and 2.5Using the Sine and Cosine ratios to determine unknown angles or unknown sides
Homework Not quite getting it Getting There Pretty Sure I have it!
page 95 #4a,7 10 (ab only)
page 101 # 3ab,4ab, 5ab, 6
page 95 #7b. 8b, 10ab, 11, 12
page 101 #3b, 4b, 5ab, 6, 7
page 95 # 10 all, 11 14page 101 # 5 all, 6 9
Day 2 2017sine and cosine no appl problems.notebook
14
June 27, 2017
Tangent Ratio Intro
2.4 Sine and Cosine to Calculate Angles
Lesson Focus: Applying Sine and Cosine Ratios to Calculate Angles
Check YOUR understandingAn observer is sitting on a dock watching a float plane in the harbour. At a certain time, the plane is 300 m above the water and 430 m from the observer. Determine the angle of elevation of the plane measured from the observer, to the nearest degree.
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2.4 Sine and Cosinet Ratios to Calculate Angles
Day 2 2017sine and cosine no appl problems.notebook
15
June 27, 2017
Tangent Ratio Intro
2.4 Sine and Cosine to Calculate Angles
Lesson Focus: Applying Sine and Cosine Ratios to Calculate Angles
2.4 Sine and Cosinet Ratios to Calculate Angles
Example 4:A water bomber is flying at an altitude of 5000 ft. The plane's radar shows that it is 8000 ft. from the target site. What is the angle of elevation of the plane measured from the target site, to the nearest degree?
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