Question

Express the complex number in trigonometric form.

3 - 3i

Answer 1

you need \(r\) and \(\theta\)
\(r=\sqrt{a^2+b^2}=\sqrt{3^2+3^2}=3\sqrt{2}\)

Answer 2

you should see from the picture i drew that \(\theta=-\frac{\pi}{4}\)

Answer 3

oh not a choice, i see, ok you can use \(\theta=\frac{7\pi}{4}\)
same place on the unit circle

Answer 4

is it the third choice

Answer 5

no

Answer 6

is it