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Which formulae do I use?. Pythag or SOH-CAH-TOA. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?. Which Formulae ?.
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