6. Rewrite sec 2x; using tan x 8. Rewrite cos x; using cos 2x and cos 4x (Hint: Use problem 7 and the fact that cos x = (cos²x)² ) 7. Rewrite cos²x; using cos 2x
6. Rewrite sec 2x; using tan x 8. Rewrite cos x; using cos 2x and cos 4x (Hint: Use problem 7 and the fact that cos x = (cos²x)² ) 7. Rewrite cos²x; using cos 2x
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.5: Product-to-sum And Sum-to-product Formulas
Problem 37E
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