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Can anyone help me finding the real and the imaginary part of the function $f(x)=\cot(x+i)$, where $i=\sqrt{-1}$?

EDIT: $x\in \mathbb R$.

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    Did you try WolframAlpha: http://www.wolframalpha.com/input/?i=cot%28x%2Bi%292011-11-09
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    You don't say whether $x$ is supposed to be real.2011-11-09
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    @tards: That was amazing! I didn't know about wolframalpha, thanks!2011-11-09

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