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AP EAMCET202017 Sep 2020Morning ShiftMathematicsVector AlgebraActual

Find (| a b |^2 ), if (| a |=2,| b |=3 ) and (( a , b )= 6 )

Options

  1. A-9
  2. B9
  3. C3
  4. D-3

Correct answer

B. 9

Step-by-step solution

(| a b |^2=[| a || b | ]^2= (2 3 1 2 )^2=9 )

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