Trigonometry Examples

$\cos (- u)$

Step 1

Since $\cos (- u)$ is an even function, rewrite $\cos (- u)$ as $\cos (u)$ .

$\cos (u)$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$