How do I write the trig form of -2i?

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- May 14th 2009, 06:30 PMjumpman23Trig Form
How do I write the trig form of -2i?

- May 14th 2009, 06:36 PMmr fantastic
- May 14th 2009, 06:39 PMjumpman23
No we have not learned about the polar form..

The textbook says to write the trigonometric form of (-2i).

and that it should look something like this: z = r(cosX + isinX) - May 14th 2009, 08:33 PMyeongil
mr fantastic means the same thing. is a shorthand way of writing , so

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