Question

Find the measures of two angles, one positive and one negative, that are coterminal with pi divided by five. How do you do this? :/

Answer 1

$\theta= \frac{\pi}{5}$
$\\ \theta_1,\theta_2$ - coterminal angles

$\\ \theta_1= \frac{\pi}{5} +2\pi= \frac{\pi}{5} + \frac{10\pi}{5}= \frac{11\pi}{5} \\ \\ \theta_2= \frac{\pi}{5} -2\pi= \frac{\pi}{5} - \frac{10\pi}{5}=- \frac{9\pi}{5}$