Given: cos 3' What is the value of cos(20)? O 9 9 9 is in QI. 4 9

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.5: Trigonometric Graphs
Problem 69E
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2
3
What is the value of cos(20)?
Given: cos
9
1
|H
69
9
4
9
0 is in QI.
Transcribed Image Text:2 3 What is the value of cos(20)? Given: cos 9 1 |H 69 9 4 9 0 is in QI.
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