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COMEDK2015MathematicsThree Dimensional Geometry

The direction ratios of the line which is perpendicular to the lines x-7 2 = y+17 -3 = z-6 1 and x+5 1 = y+3 2 = z-4 -2 are

Options

  1. A4,5,7
  2. B4,-5,7
  3. C4,-5,-7
  4. D< -4,5,7

Correct answer

A. 4,5,7

Step-by-step solution

Let DR's of line are a, b, c , then array r 2 a-3 b+c=0 and a+2 b-2 c=0 a 6-2 = b 1+4 = c 4+3 a 4 = b 5 = c 7 array DR's of line are < 4,5,7 .

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