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The tangent at 'p' on the ellipse (x^(2)...

The tangent at 'p' on the ellipse `(x^(2))/(a^(2))+(y^(2))/(b^(2))=1` cuts the major axis in T and PN is the perpendicular to the x-axis, C being centre then CN.CT =

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The correct Answer is:
`a^2`
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