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Re: Shade area between two polar curves


Show[
 {PolarPlot[{1 + 2 Cos[t], 2}, {t, 0, 2 \[Pi]}],
  RegionPlot[
   2 <= Sqrt[x^2 + y^2] <= 1 + 2 x/Sqrt[(x^2 + y^2)], {x, 0, 
    3}, {y, -2, 2},
   MaxRecursion -> 3,
   BoundaryStyle -> Thick]},
 Axes -> False,
 ImageSize -> 300]

From: Chee Lim Cheung [mailto:CheeLC at sp.edu.sg] 

Hi All

I have plotted two graphs using PolarPlot, namely the limacon r=1+2 cos(t)
and the circle r = 2 from t = 0 to t = 2 Pi. and I wish to shade the area
inside the limacon but outside the circle. Can anyone suggest a way to do
it?

Thanks and Regards
Chee




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