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If two tangents drawn from a point p to the parabola `y^(2)=4x` are at right angles then the locus of p is

A

`x-1=0`

B

`2 x+1=0`

C

`x+1=0`

D

`2 x-1=0`

Text Solution

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The correct Answer is:
C
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  9. The vertex of the parabola (y-2)^(2) = 16(x-1) is

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  10. Equation of the parabola with its vertex at (1,1) and focus (3,1) is

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  12. The directrix of the parabola x^(2)-4x-8y+12=0

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  17. The equation of the common tangents to the circle x^(2)+y^(2)=2 a^(2) ...

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