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If p is the length of the perpendicular ...

If p is the length of the perpendicular from a focus upon the tangent at any point P of the the ellipse `x^2/a^2+y^2/b^2=1` and r is the distance of P from the foicus , then `(2a)/r-(b^2)/(p^2)` is equal to

A

`-1`

B

0

C

1

D

2

Text Solution

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The correct Answer is:
C
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Knowledge Check

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