3. Unit Circle

If $\theta$ is an angle in standard position such that $\theta >180°$ and $\theta <360°$, which equation can be used to determine the reference angle $r$?

In Exercises 35–60, find the reference angle for each angle. -13𝜋/3

Identify the reference angle of each given angle.

120°

Identify the reference angle of each given angle.

$\(\frac{7\pi}{4}\)$ rad

Identify the reference angle of each given angle.

210°

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

$\(\sin\]\theta\)=\(\frac\)12$; $\(\tan\]\theta\)$ < $0$

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

$\(\cos\]\theta\)=\(\frac{\sqrt3}{2}\)$; $\(\sin\]\theta\)$ < $0$

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.

$\(\tan\)765\(\degree\)$

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

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

In Exercises 35–60, find the reference angle for each angle. 160°

In Exercises 35–60, find the reference angle for each angle.

355°

In Exercises 35–60, find the reference angle for each angle.

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