Question

Really confused all I need is explanation and maybe some steps.

Answer 1

Express 6i in the form re^(i theta).

Answer 2

@ParthKohli @paki @Nnesha

Answer 3

I have the steps. My book says 6i = r cos theta + ir sin theta

Then r=6. How?

Answer 4

I understand why we use Euler's formula.

Answer 5

Yeah well, each complex number is an addition of its "real"-part and its "imaginary"-part. Whenever you compare two complex numbers, you compare their real and imaginary parts separately.

You know what the best way to find out the polar-form of a complex number is? Graphing it.