Question

In the argand diagram, if O,P and Q represents respectively the origin, the complex numbers z and $z + iz,$ then the angle $\angle OPQ$ is

• A. $\frac{\pi}{4}$
• B. $\frac{\pi}{3}$
• C. $\frac{\pi}{2}$
• D. $\frac{2\pi}{3}$

Answer 1

Answer: (C)

$\frac{\pi}{2}$

Answer 2

Sol. It is a fundamental concept.