Precalculus Unit M Trigonometry

What is  $\frac{11\pi}{6}$   radians in degrees? 

• 30

• 330

• 360

•  300

What is 225  degrees in radians? 

• 7π/4

• 5π/4

• 3π/4

• 5π/3

Find the arc length.  Leave your answer in terms of π.

• 7/4π

• 7/2π

• 1/8π

• 45π

Find the arc length of the bolded arc. Give your answer in terms of π.

• (65/12)π cm

• 17.02 cm

• (845/24)π cm

• 26π cm

Find a coterminal angle to 5°.

• 365°

• 255°

• -220°

• -365°

Which of the following angles are co-terminal to  $\frac{7\pi}{4}$  ?

•  $-\frac{7\pi}{4}$  ,  $\frac{14\pi}{5}$  

•  $-\frac{5\pi}{4}$  ,  $\frac{19\pi}{4}$  

•  $\frac{11\pi}{4}$  ,  $\frac{-3\pi}{4}$  

•  $\frac{-1\pi}{4}$  ,  $\frac{15\pi}{4}$  

What is the reference angle for -30°?

• 150°

• 30°

• 80°

• 60°

• A

• B

• C

• D

• A

• B

• C

• D

What is the value of sine at 30

• 1/2

• √3 / 2

• 0

• √2 ⁄ 2