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AP EAMCET202422 May 2024Morning ShiftMathematicsVector AlgebraActual

Let a =3 i +4 j -5 k , b =2 i + j -2 k . The projection of the sum of the vectors a , b on the vector perpendicular to the plane of a , b is

Options

  1. A0
  2. B4 2
  3. C7 2
  4. D1 2

Correct answer

A. 0

Step-by-step solution

aligned & Projection = ( a b ) | a b | ( a + b ) & = 1 | a b | =0 ( [ array lll a & b & a array ]+ [ array lll a & b & b array ]=0 ) aligned

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