10.3 Parametric Equations & Polar Coordinates
Polar Coordinates: Overview
Polar Coordinate System
Pole is a point in the plane (origin) and labeled O.
Horizontal line drawn from the pole is called polar axis, and usually corresponds to the positive x-axis in
For any point P in the plane, the distance OP is r, and angle(usually in radians) is formed between the
polar axis and the line OP. Then the point P is represented by the ordered pair )and these are
called the polar coordinates of P.