what is the magnitude and angle of this complex number?

[hanhao]

what is the magnitude and angle of this complex number? in terms of a and b?
http://img364.imageshack.us/img364/4262/1af2.jpg
come i need some help

[neutrino]

Do you know how to convert it to the form x+iy?

[hanhao]

Do you know how to convert it to the form x+iy?
no, that's way beyond my scope
all i need is the final expression

[rsk]

I don't think you´ll find anyone here giving you the final expression.

You might find people willing to help you find the final expression.

[radou]

You should find this useful: http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut12_complexnum.htm.