The Unit Circle

Question 1

What is a Radian?

Answer 1

A radian is a unit of angle measure based on arc length. 2(pi)=360 degrees and (pi)=180 degrees.

Question 2

How do you convert degrees to radians?

Answer 2

Radians: x degrees times ((pi radians)/180).

Question 3

How do you convert radians to degrees?

Answer 3

Degrees: x degrees times (180 degrees/(pi radians)).