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If the bisector of angle A P B , where P...

If the bisector of angle `A P B ,` where `P Aa n dP B` are the tangents to the parabola `y^2=4a x ,` is equally, inclined to the coordinate axes, then the point `P` lies on the a.tangent at vertex of the parabola b.directrix of the parabola c.circle with center at the origin and radius `a` d.the line of the latus rectum.

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