Intro to Radians

How many radians does a circle have?

•   360 degrees

• 2pi radians

• pi radians

• ^{2 radians}

What is 360 degrees in radians? 

• 2π/3

• 5π/4

• 2π

• π

Convert π radians to degrees.

• 90⁰

• 180⁰

• 360⁰

• 60⁰

What is 90 degrees in radians? 

• π/4

• π/2

• π/6

• 3π/2

Radians: What is 240° in radians?

Find the radian measure of the marked angle.

Convert 150⁰ to radians

• 5π/6

• 3π/4

• 7π/6

• 2π/3

Convert 100⁰ to radians

• 5π/9

• π/2

• 5π/8

• 5π/6

Convert π/3 radians to degrees

• 60⁰

• 30⁰

• 90⁰

• 45⁰

What is 7π/4 radians in degrees?

• 300

• 135

• 315

• 45