from parametri to cartesian for ellipse pedal curve

Jun 2010
22
1
from parametric to cartesian for ellipse pedal curve

Hello!(Evilgrin)For a pedal of the ellipse i found the parametric and the corresponding Cartesian equation (see annex).Who knows a algebric method not too complicated to go from the parametric to cartesian?To me at a certain point I must solve a quartic equations in cos(t)!. (Headbang)Help me, please!(Crying)
 

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