Trig question 197

Question

compute z^4 where z is the complex number 1/3(cos(160 degrees) + isin(160 degrees))

Answer 1

Convert the Cartesian form of the complex number to the polar form and the answer becomes easy...use De Moivre's Theorem and if you don't know what that is, I suggest you look it up.

If what I have written above is unfamiliar to you, I suggest that you need a tutoring session which I will happily provide.