Question

Please Help!! Write in exponential form.

Answer 1

Answer:

C, $5e^{i(5\pi/3)$

Step-by-step explanation:

Euler's formula:

$e^{ix}=\cos{x}+i\sin{x}$

Looking at the expression in the parentheses, your x is explicitly given to you as $5\pi/3$, so using Euler's formula:

$5\left(\cos\frac{5\pi}{3}+i\sin{\frac{5\pi}{3} })=5e^{i(5\pi/3)$

Which is C.