Question

Express the complex number in trigonometric form -2i

Answer 1

2 * cos(-pi/2)

Answer 2

do u know how to do it ??

Answer 3

No not really sorry

Answer 4

When i type that in a calculator it says it =0

Answer 5

see friend , where is -i in the argand plane ??

Answer 6

I dont think I learned about the argand plane

Answer 7

then i suggest u to google argand plane for some time .... its a plane where all complex numbers are plotted...

Answer 8

Is it at 0,-1?

Answer 9

awesome .yes thats where -i exist

Answer 10

What do I need to do next?

Answer 11

see , now u draw in a paper , 4 e^ipi/6 and upload it i will see whether its correct or not ??

Answer 12

1.1316065 + 1.76237271 i

Answer 13

dont use a calculator .draw in a paper and show ...

Answer 14

Sorry man I have to go do something thanks for all your help ill try to do the rest myself