Question

Plz help:)
How to solve this?

Answer 1

try chaning to polar form ... or trigonometric form and use de Moive's theorem

Answer 2

I haven't studied de Moive's theorem but I will use polar form.

Answer 3

\[ e^{in\theta} = (\cos \theta + i \sin \theta)^n = \cos n\theta + i \sin n\theta\]

Answer 4

so this is it. now i will do it. If I have any problem, I will again ask u later that if u don't mind:)

Answer 5

k