**Arc AB is 1/3 of the circumference of a circle. What is the radian measure of the central angle**

###### Answers:

Well, recall that a whole circle is 2π radians as an angle, 1/3 of that will just be (1/3) * 2π, or (2π)/3 radians.

**Arc AB is 1/3 of the circumference of a circle. What is the radian measure of the central angle**

Well, recall that a whole circle is 2π radians as an angle, 1/3 of that will just be (1/3) * 2π, or (2π)/3 radians.