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in Three-dimensional geometry by (36.3k points)

The point P is the intersection of the straight line joining the points Q(2, 3, 5) and R(1, –1, 4) with the plane 5x – 4y – z = 1. If S is the foot of the perpendicular drawn from the point T(2, 1, 4) to QR, the length of the line segment PS is

(a) 1/√2

(b) √2

(c) 2

(d) 2√2 

1 Answer

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by (33.0k points)
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Best answer

Answer is (a) 1/√2

and the length of PT

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