UNIT CIRCLE AND CIRCULAR FUNCTIONS

The radius of a unit circle is ______

• $1$

• $\frac{\sqrt{3}}{2}$

• $\frac{1}{2}$

• $0$

______ are two angles in standard position that have a common terminal side.

• Coterminal Angles

• Reference Angle

• Central Angle

• Vertical Angle

Convert $330\degree$ to radians.

•  $\frac{11\pi}{6}rad$  

•  $\frac{\pi}{6}rad$  

•  $\frac{5\pi}{6}rad$  

•  $\frac{7\pi}{6}rad$  

Convert $480\degree$ to radians. 

•  $\frac{8\pi}{3}rad$  

•  $\frac{\pi}{6}rad$  

•  $-\frac{8\pi}{3}rad$  

•  $\frac{11\pi}{3}rad$  

Convert $-315\degree$ to radians. 

•  $-\frac{7\pi}{4}rad$  

•  $\frac{7\pi}{4}rad$  

•  $-\frac{2\pi}{3}rad$  

•  $-\frac{\pi}{12}rad$  

 $Convert\ \frac{15\pi}{4}rad\ to\ \deg rees$  

•  $675\degree$  

•  $-670\degree$  

•  $125\degree$  

•  $720\degree$  

 $Convert\ -\frac{7\pi}{20}rad\ to\ \deg rees.$  

•  $-63\degree$  

•  $-83\degree$  

•  $-93\degree$  

•  $-73\degree$  

 $Convert\ -\frac{5\pi}{6}rad\ to\ \deg rees.$  

•  $-150\degree$  

•  $-135\degree$  

•  $-180\degree$  

•  $-250\degree$  

What is the coterminal angle of  $685\degree\ between\ 0\degree\ to\ 360\degree?$  

•  $325\degree$  

•  $125\degree$  

•  $-325\degree$  

•  $-125\degree$  

Find the coterminal angle of $-1400\degree\ between\ 0\degree\ to\ 360\degree.$  

•  $40\degree$  

•  $-40\degree$  

•  $360\degree$  

•  $280\degree$