(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I'm working on a physics problem and I'm winding up with the following integral. Anyone have any clues? Contour?

[tex]\int_{0}^{2\pi} e^{i k cos\left(\theta + k_\theta\right)} d\theta [/tex]

2. Relevant equations

3. The attempt at a solution

I tried subbing in a bunch of u's and whatever else. I'm just plain stuck. I've been trying to get it in terms of something I can just look up in a table, but I can't. Can anyone give me a direction? I don't know whether this is a contour integral or what, but I'm fairly certain it is. If it is, it's been awhile since I've done any complex stuff and I don't have a book with me to help. So, if that's the case I'll just bail on the problem. Thanks!

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# Homework Help: Who likes integrals? e^(trig function)

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