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MHT CET202015 Oct 2020Morning ShiftMathematicsThree Dimensional GeometryActual

The angle between the lines x-1 4 = y-3 1 = z 8 and x-2 2 = y+1 2 = z-4 1 is

Options

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

Correct answer

B. ⁻¹ ( 2 3 )

Step-by-step solution

= | 4(2)+1(2)+8(1) 4²+1²+8² 2²+2²+1² |= | 8+1+8 81 9 |= 18 27 = 2 3 = ⁻¹ ( 2 3 )

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