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  4. Two tangents x-2 y+10=0 and x=2 of parabola intersect the tangent at vertex at (-2,4) and (2,0) respectively, then

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Q. Two tangents $x-2 y+10=0$ and $x=2$ of parabola intersect the tangent at vertex at $(-2,4)$ and $(2,0)$ respectively, then

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Solution:

Correct answer is (c) length of latus-rectum of parabola is $4 \sqrt{2}$.Correct answer is (d) equation of tangent at vertex of parabola is $y+x=2$.

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