Question

rewrie the expression as an equivlent expression that does not contain powers of trigonometric functions greater than 1: 10sin ^4x

Answer 1

Half-Angle Formula: \[
\begin{array}{}
\sin^2(\theta) &=& \frac{1-\cos(2\theta)}{2}\\
\cos^2(\theta) &=& \frac{1+\cos(2\theta)}{2}
\end{array}
\]