Originally Posted by

**WMDhamnekar** Hello,

It seems that the vertices of the ellipse in your reply are **(x,0)**and **(-x-2C,0)** because center of the ellipse is **(-C,0)**. The major axis of the ellipse is parallel to x-axis because y-co-ordinates of the vertices and the foci are same.

The standard form of equation of such ellipse not centered at origin is $\frac{(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1$ with center **(h,k).** The equation which you have given is length of major axis which is 2A. C is the length of semi-minor axis.

Is this correct? If yes, I shall ask my further querries in regard to polar co-ordinates of this ellipse.