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From an external point P, tangents are d...

From an external point P, tangents are drawn to the parabola. Find the equation of the locus of P when these tangents make angles `theta_(1)andtheta_(2)` with the axis of the parabola such that `costheta_(1)costheta_(2)=mu`, where `mu` is a constant.

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The correct Answer is:
` x^(2)= m^(2) [ (x - a) ^(2) + y^(2)]`
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