The vectors a and b are such that |a+ b| = |a − b|. What is the angle between a and b?

Question : The vectors a and b are such that |a+ b| = |a − b|. What is the angle between a and b?

(A) 0°

(B) 90°

(C) 60°

(D) 180°

Answer : option (B)

Solution :

The vectors a⃗ and b⃗ are such that |a+ b| = |a − b|. What is the angle between a and b?
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