Polar Coordinates
Below is a summary of polar coordinates equations and formulas. By graphing polar coordinates, we have the following diagram for a circle in polar coordinates.
Equation for a circle in polar coordinates

The equation for a circle in polar coordinates is given by:

where

Other equations in polar coordinates
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r = k is a circle in polar coordinates with center at (0,0) and radius k.
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is a straight line similar to y = mx where the slope of curve in polar coordinates m = tan k. -
is a spiral in polar coordinates.