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Let (2,3) be the focus of a parabola and x + y =0 and x – y = 0 be its two tangents, then equation of its directix will be

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X+y=5

12x-5y+1=0

2x-3y=0

3x+4y=0

answer is A.

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Detailed Solution

A(3,2) is image of S in x-y=0

$∴ Directrix y = \frac{2}{3} x \Rightarrow 2 x - 3 y = 0$

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