Reference Angles and Radian Measure

Convert 120 degrees to radians.

• 210 degrees

• 150 degrees

• 180 degrees

• 120 degrees

Convert 3π/4 radians to degrees.

• 90 degrees

• 135 degrees

• 270 degrees

• 180 degrees

The diameter of a circle is 8 centimeters. A central angle of the circle intercepts an arc of 12 centimeters. What is the radian measure of the angle?

Mathematical Equivalence

ON

Convert 45 degrees to radians.

• 0.5236

• 1.5708

• 3.1416

• 0.7854

Convert 315 degrees to radians.

Convert 7π/ 6 radians into degrees

• 225

• 210

• 270

• 240

Convert 360 degrees to radians.

• 180 degrees

• 0.5 * pi

• pi

• 2 * pi

Convert 270 degrees to radians.

• 4*pi/3

• 3*pi/2

• 2*pi/3

• 5*pi/4