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MHT CET202016 Oct 2020Morning ShiftMathematicsVector AlgebraActual

If the vectors + + k , - + k and 2 +3 +m k are coplanar, then m=

Options

  1. A3
  2. B-2
  3. C2
  4. D-3

Correct answer

C. 2

Step-by-step solution

(C) Since given vectors are coplanar, we write array l | array ccc 1 & 1 & 1 1 & -1 & 1 2 & 3 & ~m array |=0 (- m -3)-( m -2)+(3+2)=0 2 ~m =4 m =2 array

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