# Thread:

1. ## Express in real and imaginary parts

I am having trouble with this question i just dont know where to start, im not looking for a straight up answer just hints to help me on my way to solving it myself.

thanks in advance.

Express the following complex number in real and imaginary parts;

z = 1 / cos^2(0.5*j*ln(j))

2. ## Re: Express in real and imaginary parts

$\ln z=\ln |z|+i\arg z\Rightarrow \ln i=\cdots$

Should be straightforward from there.
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