This applet demonstrates some functions drawn using polar coordinates
Instructions below

[Polar coordinates]

This applet is designed to introduce you to graphs drawn on polar coordinates. There are several types of graph you can choose from the drop-down menu at the top.
The sliders on the right allow you to vary the angle (theta) and the zoom.

Checking the box "pi-convention" limits the value of the angle from -pi to +pi. Checking the box "show negative r" allows negative values of the distance from the pole r to be drawn in green.
Play around and get a feel for the beauty of the graphs you can see.

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