Question

Please Help!!

Write in exponential form.

Answer 1

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

Explanation:

Euler's formula:

`e^(ix)=cos(x)+isin(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(5\pi)/(3)+i\sin{(5\pi)/(3) })=5e^{i(5\pi/3)`

Which is C.