Two perpendicular tangents drawn to the ...

Two perpendicular tangents drawn to the ellipse `(x^2)/(25)+(y^2)/(16)=1` intersect on the curve.

`x = a//e`

`x^2 + y^2 = 41`

`x^2 + y^2 = 9`

`x^2 - y^2 = 41`

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