Luas Antara 2 Grafik Polar
In the following applet, you can input 
Greater Polar Function 
Lesser Polar Function 
Tmin
Tmax
Number of sectors (n) into which you'd into which you'd like to split the interval [Tmin, Tmax].  
Note:
The [Tmin, Tmax] range = 
To enter a value such as 2pi/3, simply type "2pi/3" in the input box.