Question

If vectors (A + B) = -4A the angle between A and B must be? A. 0 B. 45° C. 90° D. 180°​

Answer 1

Answer:

If vectors (A + B) = -4A the angle between A and B must be? A. 0 B. 45° C. 90° D. 180°

D) is correct answer.

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