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A line with positive direction cosines p...

A line with positive direction cosines passes through the ont `P(2,-1,2) and ` makes equal angles with the coordinate axes. The line meets the plane `2x+y+z=9 ` at Q. The length of the line segment PQ equals (A) `1` (B) `sqrt(2)` (C) `sqrt(3)` (D) 2

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