Unit Circle

A unit circle has a radius of ____.

• 0

• 1

• 0.5

What are the approximate coordinates (x, y) when  $\theta=60\degree$  as shown in the unit circle above?  
**You may need to use the Desmos scientific calculator for this problem.**

• (0.87, 0.5)

• (0.5, 0.87)

• (0.5, 0.5)

• (0.87, 0.87)

What are the approximate coordinates (x, y) when  $\theta=45\degree$  as shown in the unit circle above?
**You may need to use the Desmos scientific calculator for this problem.**

• (0.71, 0.5)

• (0.5, 0.71)

• (0.71, 0.71)

• (0.5, 0.5)

What is the equivalent degree measure for an angle that is  $\frac{\pi}{6}$  radians?

•  $0\degree$  

•  $30\degree$  

•  $45\degree$  

•  $60\degree$  

What is the equivalent degree measure for an angle that is  $\frac{3\pi}{4}$  radians?

• $0\degree$

•  $45\degree$ 

•  $135\degree$ 

•  $145\degree$ 

What is the equivalent radian measure for an angle that is  $60\degree$ ?

•  $\frac{\pi}{6}$ radians

•  $\frac{\pi}{4}$ radians

•  $\frac{\pi}{3}$ radians

•  $\frac{\pi}{2}$ radians

What is the equivalent radian measure for an angle that is  $210\degree$ ?

•  $\frac{7\pi}{6}$ radians

•  $\pi$ radians

•  $\frac{4\pi}{3}$ radians

•  $\frac{3\pi}{2}$ radians