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JEE Main2002MathematicsVector AlgebraActual

a =3 i -5 j and b =6 i +3 j are two vectors and c is a vector such that c = a b then | a |:| b |:| c |

Options

  1. A34 : 45 : 39
  2. B34 : 45 : 39
  3. C34: 39: 45
  4. D39: 35: 34

Correct answer

B. 34 : 45 : 39

Step-by-step solution

We have a b =39 k = c Also | a |= 34 ,| b |= 45 ,| c |=39 | a |:| b |:| c |= 34 : 45 : 39

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