If two tangents drawn from a point P to ...

If two tangents drawn from a point P to the parabola y2 = 4x are at right angles, then the locus of P is (1) `2x""+""1""=""0` (2) `x""=""1` (3) `2x""""1""=""0` (4) `x""=""1`

A

2x+1=0

B

x=-1

C

2x-1=0

D

x=1

Verified by Experts

The correct Answer is:

B

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