Angles Radians Degrees

Find the exact value of the trig function.

Find the measure of the angle marked in red.

• -230°

• 130°

• 230°

• 50°

Convert π/4 radians to degrees

• 90⁰

• 45⁰

• 60⁰

• 30⁰

What is 270 degrees in radians? 

• π/4

• 3π/2

• 3π/4

• π/2

What is 2π/3 radians in degrees? 

• 150

• 120

• 180

•  30

What are the negative and positive coterminal angles of 240 degrees?

• 540°, -120°

• 600°, -120°

• 425°, -240°

• 120°, -135°

Find a coterminal angle to 45 degrees.

• 360

• 405

• 315

• 295

Find a coterminal angle to 0 degrees.

• 360

• 180

• 90

• 270

Find a coterminal angle to -180 degrees.

• 180

• 90

• 270

• 360

Which of the following is a negative coterminal angle of 165 degrees?

• -165

• 525

• -525

• -555