De Moivres states
which leads to
can be written
The two lines equals eachother if
making the angles
This is my problem:
Ah I forgot that |z| equals the hypotenuse, but I'm not with you all the way on the half angle identities part, seeing that its a cubicequation, it should have two roots.
And what if the equation was;
could it be solved the same way?
I'm Swedish by the way so sorry if I don't get the termonoligy right.