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MHT CET202013 Oct 2020Morning ShiftMathematicsThree Dimensional GeometryActual

f a line in octant OXYZ makes equal angles with co-ordinate axes, then

Options

  1. Al=m=n= 1 3
  2. Bl=m=n=- 1 3
  3. Cl=m=n= 1 3
  4. Dl=m=n=- 1 3

Correct answer

C. l=m=n= 1 3

Step-by-step solution

Let the direction cosines of the lines makes an angle with each of coordinate axes. array l + m ²+ n ²=1 3 ² =1 ² = 1 3 = 1 3 = m = n = 1 3 array

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