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Tangents to the parabola y 2 =4ax at P and Q meet at T . And the corresponding normals meet at R. If the locus of T is a straight line parallel to the axis of parabola , prove that locus of R is a straight line normal to parabola.

Tangents to the parabola y2=4ax at P and Q meet at T . And the corresponding normals meet at R. If the locus of T is a straight line parallel to the axis of parabola , prove that locus of R is a straight line normal to parabola.

Grade:11

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