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Area of an Epicycloid ???
hello all ! im just trying to calculate the area between the epicyloid curve and the big circle ! the problem is that there are some x coordinates which have 2 y values.... so i cant just simply integrate ! maybe someone of you has a hint for me ! Someone told me that maybe polar coordinates could be helpfull... what do ya think ? parameter form formula for epicycloids: x(t) = (R+r) * cos (t) - r * cos ((R+r)*t / r ) y(t) = (R+r) * sin (t) - r * sin ((R+r) *t /r ) thanks in advance & bye Steve martins !