(adsbygoogle = window.adsbygoogle || []).push({}); expressing points on an ellipse given the (x,y) of the foci and the sum of the radii

Given the (x,y) of the 2 foci of an ellipse,

and the sum of the radii from the foci,

Is there an equation that will find the (x,y) of a point on the ellipse at a specified angle?

Is there an equation to find the (x,y) given one radius' length from a specified focus?

Thank you.

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# Expressing points on an ellipse given the (x,y) of the foci and the sum of the radi

**Physics Forums | Science Articles, Homework Help, Discussion**