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Write the following functions in simplest form: $$\tan^{-1}\left(\frac{\cos(x)-\sin(x)}{\cos(x)+\sin(x)}\right), \quad 0

Please help me to solve this problem. I have been trying to solve this from last 3 hours. I can solve simple inverse trigonometric functions

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    define *simplest* please.2012-08-23
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    It would be nice if it had the form $\tan^{-1}\left(\frac{\sin(\cdots)}{\cos(\cdots)}\right)$, wouldn't it? See if you can use rewritings like [this](http://math.stackexchange.com/questions/181676/how-to-see-sin-x-cos-x/181841#181841) to make it so.2012-08-23

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