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CGP EDU Academic Team
Published on: August 13, 2026
If y+b = m 1 (x+a) and y+b = m 2 (x+a) are two tangents to the parabola y 2 = 4ax, then
Text Solution
Verified by ExpertsThe correct answer is:
C
The given lines are passes through (-a, -b), this is a point on the directrix x = -a. The tangents drawn from any point on the directrix to the parabola are at right angles.
∴ ∴ m 1 m 2 = -1
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