Reference Angles and Radian Measure

Express 5π/6 radians in degrees.

• 30 degrees

• 270 degrees

• 90 degrees

• 150 degrees

Convert 3π/4 radians to degrees.

• 270 degrees

• 135 degrees

• 180 degrees

• 45 degrees

Determine a coterminal angle for -π/3 radians.

• 4π/3 radians

• 5π/3 radians

• -2π/3 radians

• π/3 radians

Convert -2π/3 radians to degrees.

• -240°

• 60°

• -120°

• -45°

Find a coterminal angle for 300 degrees.

• 720 degrees

• 660 degrees

• 450 degrees

• 250 degrees

What is the reference angle for an angle of 150 degrees?

• 30 degrees

• 90 degrees

• 120 degrees

• 60 degrees

Identify the reference angle for an angle of -45 degrees.

• 90 degrees

• 45 degrees

• 180 degrees

• -90 degrees

What is the reference angle for an angle of 330 degrees?

• 30 degrees

• 120 degrees

• 90 degrees

• 60 degrees