I tried multipling out the number and then arctan( but its not right

I also tried finding the and dividing it by n, "3" ,but it is not the right answer.

it turns out to be

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- Oct 13th 2009, 10:16 PMFallen186Complex Principal Argument #2

I tried multipling out the number and then arctan( but its not right

I also tried finding the and dividing it by n, "3" ,but it is not the right answer.

it turns out to be - Oct 13th 2009, 10:18 PMChris L T521