http://img34.imageshack.us/img34/6084/image2maw.jpg

If anyone could help me out here, in particular if you could explain what AB^2 is referring too. Thanks!

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- Jun 20th 2009, 04:35 AMLHSComplex number question, involving argument and modulus
http://img34.imageshack.us/img34/6084/image2maw.jpg

If anyone could help me out here, in particular if you could explain what AB^2 is referring too. Thanks! - Jun 20th 2009, 04:54 AMmalaygoel
Let

we have now

hence angle between OB and OC is

which gives

Now, we have,

I think AB here represents the distance between A and B.

there is only one unknown, hence it can be solved. - Jun 20th 2009, 05:35 AMLHS
Thank you for your help!

But unfortunately your solution is outside the level of my current course (I started complex numbers and my further course last week), I do not recognise what you are doing with e. Do you know any solutions with more basic math? - Jun 20th 2009, 05:54 AMrunning-gag
Hi

But

And

Therefore

To find (OA,OB) you can use the formula ABČ = OAČ + OBČ - 2.OA.OB.cos(AOB) - Jun 20th 2009, 06:13 AMLHS
Ah I understand a little better now, so the angle AOB is 2pi/3?

How do you suggest finding the lines OA or OB angle with the x axis?

Unfortunately as I said earlier, I don't really understand your lines 2-4. - Jun 20th 2009, 08:09 AMrunning-gag
- Jun 20th 2009, 08:40 AMLHS
Right, ok, I see, thank for you your help!