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KCET2025MathematicsVector Algebra

If | a |=10,| b |=2 and a b =12 , then the value of | a b | is

Options

  1. A5
  2. B10
  3. C14
  4. D16

Correct answer

D. 16

Step-by-step solution

aligned & | a b | | a || b | = 4 5 & | a b |= 4 5 20=16 aligned

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