Trigonometry Examples

$- \frac{2}{5} π$

Step 1

Add $2 π$ to $- \frac{2}{5} \cdot π$ .

$- \frac{2}{5} \cdot π + 2 π$

Step 2

The resulting angle of $\frac{8 π}{5}$ is positive and coterminal with $- \frac{2}{5} \cdot π$ .

$\frac{8 π}{5}$