Question

help with trig

Answer 1

express the complex number in trigonomic form.
-4i

Answer 2

start by finding the magnitude, \(r\)
and the angle \(\theta \)

Answer 3

can you plot `-4i` in complex plane ?

Answer 4

whats a complex plane? .-.

Answer 5

.-. why is there no x and y?

Answer 6

its exact analogous to the xy plane :
x axis --> Real axis
y axis --> Imaginary axis

Answer 7

-4i = 0 + (-4)i

Answer 8

Notice that Real part = 0,
and Imaginary part = -4

Answer 9

very good try :) but no !
careful -4 is `imaginary` and the imaginary axis the Vertical...

Answer 10

okay... but i dont need to graph it /).(\ i just need a thing with cos and sin in it. how do i get that?

Answer 11

@ganeshie8

Answer 12

graphing is the fast method here