**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 :**

with
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**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 :**