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I need a simple way to turn a vector by an angle. I know that it works with rotation matrix but i dont know how to use it. Can u give me a simple formular?

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    All the formulas you need are here: http://en.wikipedia.org/wiki/Rotation_matrix. If you don't understand what's written there, you'll profit more from asking a specific question about what you don't understand than from asking in this generality.2011-07-18
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    http://en.wikipedia.org/wiki/Rotation_matrix I think it explains a lot, if you work on Cartesian coordinates.2011-07-18

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