3π 3 3п 1. If sin A π≤A≤ and cos B 2 -
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 41E
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Transcribed Image Text:3π
3 3п
1. If sin A
π≤A≤
and cos B
2
-<B≤2л determine the exact value of cos(A + B).
7' 2
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