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MHT CET202015 Oct 2020Evening ShiftMathematicsThree Dimensional GeometryActual

The angle between the two lines x-4 1 = y+4 2 = z+1 2 and x+1 2 = y+3 2 = z-4 -1 is

Options

  1. A⁻¹ ( 4 9 )
  2. B⁻¹ ( 5 9 )
  3. C⁻¹ ( 1 9 )
  4. D⁻¹ ( 2 9 )

Correct answer

A. ⁻¹ ( 4 9 )

Step-by-step solution

Let be the required angle array l = | 1(2)+2(2)+2(-1) 1+4+4 4+4+1 |= |2+4-2| 3 3 = 4 9 = ⁻¹ ( 4 9 ) array

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