Polar and Rectangular Coordinates
The relationships between rectangular coordinates (x , y) and polar coordinates (R , t), using the figure below, are as follows:
y = R sin t and
x = R cos t
R2 = x2 + y2 and tan t = y / x
where the quadrant of angle t is determined by the signs of x and y.
An html 5 applet is used to calculate x and y knowing R and t. Angle t may be in degrees or radians.
How to use the calculator
1 - Enter angle t then R (positive). Depending on whether t is in degrees or radians, press the button "enter" that is in the same row.
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