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Possible Duplicate:
How to find $x$ in some trigonometric equations

How to solve these trigonometric equations?

$$\tan2x-\sin4x = 0$$

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    Why did you post the same equation of [your last question](http://math.stackexchange.com/q/183619/752)?2012-08-17
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    My hint and answer to the last question (as linked by Américo Tavares) give a method of solving this.2012-08-17

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