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Section 5 Mathematical Formulas
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| $sin$ | $sin(\alpha \pm \beta)=sin\alpha \;cos \beta \pm cos\alpha \;sin\beta$ | |||||
| $cos$ | $cos(\alpha \pm \beta)=cos\alpha \;cos\beta \mp sin\alpha \;sin\beta$ | |||||
| $tan$ | $tan(\alpha \pm \beta)=\frac{tan\alpha \pm tan\beta}{1\mp tan\alpha \;tan\beta}$ |