Question

Find the fourth roots of 16(cos 200 + i sin 200)

Answer 1

I actually have notes on this in a notebook nearby, one second

Answer 2

Thanks :)

Answer 3

The formula is:

We know that r is 16
And that theta is 200

And n is 4 because we are asking for the 4th root

And k is n-1 so we go up to the number 3. So we have to do this 4 different times using:

k=0
k=1
k=2
k=3