I have this problem and I want to make sure I understand it.
Use DeMoivre's theorem to write [3cis(pi/2)][squared] in the form a + bi without trigonometric functions.
Hello, Mike!
Use DeMoivre's theorem to write in the form
We don't really need DeMoivre's Theorem for this one, but here goes . . .
We have: .
. . . . . .
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
We could have squared it without DeMoivre's Theorem.
. . Then: .