In a plane, suppose you have a point called the origin, and an axis through that point – say the -axis – called the polar axis.
Then the polar coordinates describe the point lying a distance of units away from the origin, at an angle of to the -axis. The value of may be given in degrees or radians .
To convert from polar coordinates to Cartesian coordinates, you can use:
To convert from Cartesian coordinates to polar coordinates:
So, the Cartesian ordered pair converts to the Polar ordered pair .