Precalculus Examples

$\tan (- x) \tan (\frac{π}{2} - x)$

Step 1

Since $\tan (- x)$ is an odd function, rewrite $\tan (- x)$ as $- \tan (x)$ .

$- \tan (x) \tan (\frac{π}{2} - x)$

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