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which of the following is equal to cos^(4)\theta ? a) (3)/(8)-(1)/(2)cos2\theta +(1)/(8)cos4\theta  b) (1)/(4) + (1)/(4)cos2\theta  c) (3)/(8)+(1)/(2)cos2\theta +(1)/(8)cos4\theta  d) 1-sin^(4)\theta  e) none of the above

which of the following is equal to cos^(4)\theta ? a) (3)/(8)-(1)/(2)cos2\theta +(1)/(8)cos4\theta  b) (1)/(4) + (1)/(4)cos2\theta  c) (3)/(8)+(1)/(2)cos2\theta +(1)/(8)cos4\theta  d) 1-sin^(4)\theta  e) none of the above

Algebra & Trigonometry with Analytic Geometry
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 2E
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which of the following is equal to cos^(4)\theta ?

a) (3)/(8)-(1)/(2)cos2\theta +(1)/(8)cos4\theta 

b) (1)/(4) + (1)/(4)cos2\theta 

c) (3)/(8)+(1)/(2)cos2\theta +(1)/(8)cos4\theta 

d) 1-sin^(4)\theta 

e) none of the above

 

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