Question

Express the complex number in trigonometric form.

-6i

Answer 1

Would the correct answer be 6(cos 0° + i sin 0°)?

Answer 2

hmm no

Answer 3

cos 0°=1 so you'd be doing the opposite of what you want to do.
-6(cos 90°+ i sin 90°)

Answer 4

in trig form the number out front should be positive, it is the absolute value
but that angle is not 90 degrees

Answer 5

Ahhh my bad. @satellite73 knows

Answer 6

there are many ways to express the number in trig form, but you need that angle
you could say it is \(270\) or \(-90\) or whatever

Answer 7

So 6(cos 270° + i sin 270°) would be the answer? @satellite73