How would you simplify/solve this? cos(x+x) + sin²x = cosxcosx - sinxsinx + sin²x = ? thanks
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Originally Posted by advancedfunctions2010 How would you simplify/solve this? cos(x+x) + sin²x = cosxcosx - sinxsinx + sin²x = ? simplify ... $\displaystyle cos^2{x} - \sin^2{x} + \sin^2{x} = \cos^2{x}$
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