Unit Circle Basics - radians

How many radians in a full circle?

• π/2
• π
• 3π/2
• 2π

The radius of the unit circle is

• 0

• 1

• $\pi$

• -1

180 degrees equals _____ radians

• 100

• 1

• 14

• $\pi$

0 degrees equals _____ radians

• 180

• 360

• 0

• $\pi$

90 degrees equals _____ radians

• $\pi$

• $\frac{\pi}{2}$

• 180

• 360

270 degrees equals _____ radians

• $2\pi$

• $\pi$

• $\frac{\pi}{2}$

• $\frac{3\pi}{2}$

360 degrees equals _____ radians

• $2\pi$

• $\pi$

• $\frac{\pi}{2}$

• $\frac{3\pi}{2}$

 $\pi$  radians =  ____ degrees

• 1

• 0

• 180

• 360

 $2\pi\ radians\ =$  ____ degrees

• 1

• -1

• 180

• 360

 $\frac{3\pi}{2}$  radians = ____ degrees

• 0

• 90

• 180

• 270