Question

Express the complex number in trigonometric form.

-4

Answer 1

do you know the formulas to convert complex numbers to trigonometric form ?

Answer 2

no .-.

Answer 3

ok.,
we would need x and y
\(\large r = \sqrt{x^2+y^2} \\ \large \theta = \tan^{-1}\dfrac{y}{x}\)

so compare -4 with x+iy
whats x =...?
y=... ?

Answer 4

how are you getting 3 numbers out of -4!? o.o i get that i=-
so y is probably 4 but where are you getting x from?

Answer 5

we need only 2 numbers
x and y

see,