Q. If $ar g (z) < 0$ , then $ar g (- z) - ar g (z)$ equals

120 133 Complex Numbers and Quadratic Equations Report Error

A

$π$

B

$- π$

C

$- \frac{π}{2}$

D

$\frac{π}{2}$

Solution:

Let $α = ar g z < 0$ , then $ar g (- z) = π + α$ ,

Solution Image