The focus of a parabola is and its directrix is the line

MATHEMATICS · Single correct · CBSE · Mathematics · Conic Sections · Conic Sections

Problem

The focus of a parabola is (5,0)(5,0) and its directrix is the line x=−5x=-5. If the point (k+2,45)(k+2, 4\sqrt{5}) lies on this parabola, the value of kk is (a) 33 (b) 00 (c) 22 (d) 44

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