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a + b + c = 0 such that | a | 3,| b |=5 and | c |=7 . What is cosine of the angle between b and c ?

Options

  1. A11 12
  2. B13 14
  3. C- 11 12
  4. D- 13 14

Correct answer

D. - 13 14

Step-by-step solution

The correct answer is option (D)

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