You'll be spinning in unit circles once you read through this jumbo-sized resource of everything you need to know about trigonometry. Each page has color-coded examples with explicit directions that detail the problems and...

This site offers a discussion on radian measure. The site offers pictures and explanations to clarify the formulas given. (Note: The free download at the end of the page will not work in archived version of site.)

This site displays the formulas for the simple conversions of degrees to radians and radians to degrees. Near the bottom of the page there are examples of these conversions.

An introduction to radian measurement, including converting between radians and degrees. Includes several examples and lots of pictures.

Describes degrees and radians with respect to angles, the reason for the invention and use of radians, and how to convert between radians and degrees.