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education/math/MATH1060 (trig)/Addition and Subtraction.md
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Given the formula $\sin(\alpha + \beta)$: Given the formula $\sin(\alpha + \beta)$:
$$ \sin(\alpha + \beta) = \sin(\alpha)\cos(\beta) + \cos(\alpha)\sin(\beta) $$
$$ \sin() Given the formula $\cos(\alpha + \beta)$:
$$ \cos(\alpha + \beta) =