If -1+ 3 i = re ^ i , then = - Vidyadip

MCQ

If $-1+\sqrt{ } 3 i = re ^{ i \theta}$, then $\theta=$

A
$-\frac{2 \pi}{3}$
B
$\frac{\pi}{3}$
C
$-\frac{\pi}{3}$
✓
$\frac{2 \pi}{3}$

✓

Answer

Correct option: D.

$\frac{2 \pi}{3}$

$\frac{2 \pi}{3}$

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