Area between two polar curves

This interactive figure dynamically illustrates how [color=#9900ff]an area bounded by the graphs of 2 polar functions [/color]is calculated. It also displays[color=#9900ff] an approximate value of such an area [/color]broken up into [i][math]n[/math] [/i]sectors. [br][br][b]Note:[/b][br]This figure uses the variable [i][math]t[/math][/i] instead of the variable [math]\theta[/math]. [br]To enter an exact value in the input box, such as [math]\frac{5\pi}{6}[/math], type "5pi/6".
[color=#666666][i]Developed for use with Thomas' Calculus, published by Pearson.[/i][/color]

Information: Area between two polar curves