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AP EAMCET201724 Apr 2017Morning ShiftMathematicsVector AlgebraActual

Let a =4 i +5 j - k , b = i -4 j +5 k , c =3 i + j - k and let be a vector perpendicular to both a and b such that c =63 . Then =

Options

  1. A7 i -7 j -7 k
  2. B3 i -3 j -3 k
  3. C21 i -21 j -21 k
  4. D21 i -7 j -7 k

Correct answer

C. 21 i -21 j -21 k

Step-by-step solution

No solution. Refer to answer key.

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