Question

Use the​ power-reducing formulas to rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.

2(sin^4)x

Answer 1

13sin4(x) = 39/8 - 13/2cos(2x) + 13/8cos(4x)

Explanation:

13sin4(x) = 39/8 - 13/2cos(2x) + 13/8cos(4x)