Question

Express the complex number in trigonometric form.

-5i

Answer 1

@ganeshie8 @MathWiz1997 @cwrw238

Answer 2

@aaronq @experimentX

Answer 3

hold on a sec

Answer 4

Complex numbers is trigonometric form ------
value[cos(theta)+i*sin(theta)]

Answer 5

-5e^(i Pi/2)

Answer 6

here the magnitude is 5
and the angle is (3*pi/2)
so in trig form
f(x)= 5(Cos[270]+iSin[270]

Answer 7

Alright, thanks for the help guys!

Answer 8

u can check it
cos 270˚ = 0
sin 270˚ = -1
so
5(Cos[270]+iSin[270] =5(-i)=-5i

Answer 9

no pro :)