Precalculus Examples

$- 131 °$

Step 1

The complement of $- 131 °$ is the angle that when added to $- 131 °$ forms a right angle ( $90 °$ ).

$90 ° - (- 131)$

Step 2

Multiply $- 1$ by $- 131$ .

$90 + 131 °$

Step 3

Add $90$ and $131$ .

$221 °$