00:03
Okay, so i'm going to start with root 3 minus i to the 6th.
00:09
And the easiest way to get this back into a plus bi form is to put it in polar form first and work backwards.
00:14
So first thing i'm going to do is draw a little sketch here.
00:17
And that's going to put me in a triangle in the fourth quadrant.
00:20
Route 3 will be my cosine.
00:22
Negative 1 would be my sign.
00:24
Using the pythagorean theorem, it's going to give me 2 as my hypotenuse, which will also be my modulus.
00:33
So in this case, i've got two, cosine i sign, and i have to find this angle here.
00:40
Well, when this is a 1 and this is a root 3, this is a 30 degree reference angle, and so this is 330 degrees...