Polar Coordinates
From Math Images
This is a Helper Page for:


Change of Coordinate Systems 
Harmonic Warping 
Radians 
Polar Coordinates are coordinates which locate points by their distance from the origin and their rotation from the positive xaxis. Traditionally, represents distance from the origin and represents rotation in radians from the positive xaxis.
For example, the point is 1 unit from the origin (as can be seen by the Pythagorean Theorem) and is a rotation of from the positive xaxis, so can be represented in polar form by: .