Three Dimensional Geometry
The equation of the plane passing through the point (1,1,1) and perpendicular to the planes 2x+y−2z=5 and 3x−6y−2z=7 , is (A) 14x+2y+15z=3 (B) 14x+2y−15z=1 (C) 14x+2y+15z=31 (D) 14x−2y+15z=27
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Write the value of k for which the planes 2x+5y+kz=4 and x+2y−z=6 are perpendicular to each other.
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