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Forums
Mathematics
General Math
Linear combination of sin and cos
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[QUOTE="Mr Davis 97, post: 6006125, member: 515461"] I have before me that ##\cos 2x + \sin 2x = \sqrt{2} \cos (2x - \pi / 4)##. Where does this expression on the right come from? I tried to look on the internet but I couldn't really articulate it well enough to find anything on it. [/QUOTE]
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Forums
Mathematics
General Math
Linear combination of sin and cos
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