In the Argand plane, if \( O, P \) and \( Q \) represent respectively the origin \( O \) and the...
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0In the Argand plane, if \( O, P \) and \( Q \) represent respectively the origin \( O \) and the complex numbers \( z \) and \( z+i z \) respectively, then \( \angle O P Q \) is
(A) \( \frac{\pi}{4} \)
(B) \( \frac{\pi}{3} \)
(C) \( \frac{\pi}{2} \)
(D) \( \frac{2 \pi}{3} \)
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