Question

Use De Moivre's theorem to write the complex number in trigonometric form. ???

Answer 1

De Moivre's theorem: \((\cos(x)+i\sin(x))^n = \cos(nx)+i\sin(nx)\)

Answer 2

so \[\cos3\pi/4 + i \sin3\pi/4\]

Answer 3

yeah :)

Answer 4

thank you! :)

Answer 5

No problem :D