I have the following complex numbers : -3,18 +4,19i
I must put it in polar form.
cos x = a/r
sin x = b/r
The Attempt at a Solution
I was able to find with cos x = a/r that the x = 127,20
But when I do it with sin x = b/r I obtain like 52 degrees. I know that I Must obtain 127,20 for BOTH. Why isnt it working ?