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KCET2009MathematicsVector Algebra

If a b =-| a || b | , then the angle between a and b is

Options

  1. A45^
  2. B180^
  3. C90^
  4. D60^

Correct answer

B. 180^

Step-by-step solution

Given, a b =-| a || b | | a || b | =-| a || b | =-1 =180^

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