Question

How do you find the modulus and argument of -5i?

Answer 1

the modulus should be more or less obvious
what is the absolute value of \(-5i\) ?

Answer 2

Well, I got 5 but I just wanted to make sure that it was correct. The thing I really need help with is the argument.

Answer 3

plot the point, it will be completely obvious as well

Answer 4

180?

Answer 5

oh no

Answer 6

So 270

Answer 7

yes

Answer 8

if you are working in degrees

Answer 9

Thanks a lot

Answer 10

yw