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Two mutually perpendicular tangents of the parabola {y}^{{{2}}

Question

Two mutually perpendicular tangents of the parabola $y^{2} = 4 a x$ meet the axis at $P_{1} and P_{2}$ . If S is the focal of the parabola, Then $\frac{1}{S P _{1}} + \frac{1}{S P _{2}}$ is equal to

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Two mutually perpendicular tangents of the parabola

y^{2} = 4 a x

meet the axis at

P_{1} and P_{2}

. If S is the focal of the parabola, Then

\frac{1}{S P _{1}} + \frac{1}{S P _{2}}

is equal to

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Question Text

Two mutually perpendicular tangents of the parabola

y^{2} = 4 a x

meet the axis at

P_{1} and P_{2}

. If S is the focal of the parabola, Then

\frac{1}{S P _{1}} + \frac{1}{S P _{2}}

is equal to

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