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Tangents drawn at the ends of any focal chord of a parabola y^2 = 4ax intersect in the line

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Tangents drawn at the ends of any focal chord of a parabola y2 = 4ax intersect in the line

(a) y - a = 0 

(b) y + a = 0 

(c) x - a = 0 

(d) x + a = 0

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1 Answer

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Best answer

Correct option (c) x - a = 0   

Explanation:

Semi latus rectum is harmonic mean between segments of focal chords of a parabola.

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