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If PN is the ordinate of a point P on th...

If PN is the ordinate of a point P on the ellipse `x^2/a^2+y^2/b^2=1` and the tangent at P meets the x-axis at T then show that (CN) (CT)=`a^2` where C is the centre of the ellipse.

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The correct Answer is:
`a^2`
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