The angle addition formula for cosine is cos(a ± ß) sin a sin ß. Use this formula to find the exact value of cos(60°-45°). cos(60°-45°) = = cos a cos F
The angle addition formula for cosine is cos(a ± ß) sin a sin ß. Use this formula to find the exact value of cos(60°-45°). cos(60°-45°) = = cos a cos F
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter8: Complex Numbers And Polarcoordinates
Section8.3: Products And Quotients In Trigonometric Form
Problem 67PS
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