The formula for cos(at B) is cos a cos B - sin a sin B cos a cos B + sin asin B sin a sin B - cos a cos B

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 92E
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The formula for cos(a+ B) is
cos a cos B - sin a sin B
cos a cos B + sin
+ sin a sin B
sin B- cos a cos B
Transcribed Image Text:The formula for cos(a+ B) is cos a cos B - sin a sin B cos a cos B + sin + sin a sin B sin B- cos a cos B
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