Question

Express the complex number in trigonometric form:

-2i

Answer 1

Are you able to plot the complex number in the complex plane?

Answer 2

:/ no I don't know how

Answer 3

-2i is the same as 0 + (-2)i

Answer 4

oh okay!

Answer 5

that is of the form a+bi

Answer 6

oh true

Answer 7

so a = 0, b = -2

each complex number can be plotted on the xy coordinate axis

the x axis represents the real part 'a'

the y axis represents the imaginary part 'b'

Answer 8

So where is this point?

Answer 9

it's at 0, -2

Answer 10

good, let's plot that

Answer 11

How far is this point from the origin (0,0) ?

Answer 12

-2

Answer 13

distance can't be negative

Answer 14

but you have the right idea

it's 2 units