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

The tangents to the parabola `y^(2)=4ax` at the vertex V and any point P meet at Q. If S is the focus, then prove that SP,SQ and SV are in GP.

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The tangents to the parabola y^2=4a x at the vertex V and any point P meet at Q . If S is the focus, then prove that S PdotS Q , and S V are in GP.

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If the tangent at any point P to the parabola y^(2)=4ax meets the directrix at the point K , then the angle which KP subtends at its focus is-

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