Radians

Radians

With circular motion we use radians instead of degrees.

The radian is a unit of plane angle

1 radian =  360/2π degrees =  57.296 degrees.

A radian is the standard unit of angles in all areas of mathematics beyond the elementary level.

One radian is the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle.