If and are two points

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

If P(0,1,0)P(0,1,0) and Q(0,0,1)Q(0,0,1) are two points, then the length of the projection of PQPQ on a plane x+y+z=cx+y+z=c is (1) 2 (2) 3 (3) 2\sqrt{2} (4) 3\sqrt{3}

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