Conic Sections : Challenge #1

Geometry Level 3

The question is of chapter 'Parabola' in the unit Conic Sections.

AB and AC are tangents to the parabola y 2 = 4 a x y^{2} = 4ax If p, q and r are the lengths of perpendiculars from A, B and C respectively on any tangent of the curve, then p, q, r are in:

Arithmetico Geometric Progression Arithematic Progression Harmonic Progression Geometric Progression

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