1.

C is the centre, AA' and BB' are major and minor axis of the ellipse. x^2/a^2+y^2/b^2=1. If PN is the ordinate f a point P on the ellipse then show that (PN)^2/((A'N)(AN))=(BC)^2/(CA)^2

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ANSWER :`(BC)^2/(CA)^2=b^2/a^2implies (PN)^2/((A'N)(AN))=(BC)^2/(CA)^2`


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