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The tangents ot the parabola y^(2) = 4ax...

The tangents ot the parabola `y^(2) = 4ax` from an external point P make angles `theta_(1) theta_(2)` with the axis of the parabola . Such that tan `theta_(1) +tan theta_(2)` = b where b is constant . Then P lies on

A

y = x +b

B

y + x = b

C

`y = (x)/(b)`

D

y = bx

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The correct Answer is:
D
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