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IF the line x-y=-4k is a tangent to ...

IF the line ` x-y=-4k ` is a tangent to the parabola `y^2 = 8x` at P , then the perpendicular distance of normal at P from ( k , 2k) is

A

`5/2sqrt2`

B

`7/2sqrt2`

C

`9/2sqrt2`

D

`1/2sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
C
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