3. Unit Circle

Identify what angle, $\theta$ , satisfies the following conditions.

$\tan\theta=-1$; $\cos\theta$ > $0$

For each expression, identify which coterminal angle to use & determine the exact value of the expression.

$\sin\frac{7\pi}{3}$

For each expression, identify which coterminal angle to use & determine the exact value of the expression.

$\tan765\degree$

For each expression, identify which coterminal angle to use & determine the exact value of the expression.

$\cos\left(-\frac{10\pi}{4}\right)$