Hi

here

http://up.arab-x.com/Mar10/ZKR33215.jpg

http://arb-up.com/i/00020/egtlvnenn9xs.jpghttp://arb-up.com/i/00020/hd8k4515ke6v.jpg

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- Apr 8th 2010, 07:06 AMr-soyPolar form of complex numbers
- Apr 8th 2010, 07:18 AMProve It
.

Notice that this is in the third quadrant.

Its length is

.

The angle is in the third quadrant.

So it's calculated as

.

Therefore:

. - Apr 8th 2010, 07:25 AMProve It
First you need to convert to polars.

.

Notice that the angle is in the fourth quadrant.

So it's calculated by

.

So

Therefore

. - Apr 8th 2010, 11:53 AMr-soy
thanks but why you wrote ( cis ) no e

- Apr 8th 2010, 10:22 PMProve It
is just a shorthand way of writing .

As we know, .

So I could have written , I just prefer using the notation, as I find it easier to convert between polars and cartesians. - Apr 9th 2010, 07:21 AMr-soy
Hi prove it

I want ask you if your answers are completed

I mean if there any answer after your solving - Apr 9th 2010, 07:26 AMProve It
Yes, the solutions are complete with answers.