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MHT CET20225 Aug 2022Evening ShiftMathematicsVector AlgebraActual

If a and b are vectors such that | a |=3,| b |=2 and a b =5 , then =| a - b |=

Options

  1. A23
  2. B3
  3. C5
  4. D3

Correct answer

B. 3

Step-by-step solution

| a - b |= | a |^2+| b |^2-2 a b = 3^2+2^2-2 5 = 3

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