JEE Main 2022 — Parabola Question with Solution
From: JEE Main 2022 (Online) 28th July Evening Shift
Question
Two tangent lines and are drawn from the point to the parabola . If the lines and are also tangent to the circle , then 17r is equal to ___________.
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Show full solutionCorrect answer: 9
Step-by-step explanation
Given :
\eqalign{ & T \equiv y = mx - {1 \over {8m}} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \downarrow (2,0) \cr}
Tangents are
and
If these are also tangent to circle then
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