You should KNOW

1. That an angle is formed by rotating a "terminal side" with respect to an "initial side" and that the angle is positive if the rotation is counter-clockwise, negative if clockwise.

2. How to measure angles by both degree and radian measure and how to convert between them.

3. That an angle can have any radian measure equal to any real number, that more than 2 Pi radians corresponds to more than one full rotation and that less than 2 Pi radians corresponds to less than one full rotation.

4. How to find the length of a circular arc intercepted by a central angle.

   

You should be ABLE TO

1. Convert between radian and degree measure of angles.

2. Determine the quadrant in which an angle lies, and determine if two angles are coterminal.

3. Find lengths of circular arcs intercepted by central angles a circle of given radius or determine the radius from the length of an arc and its corresponding angle.