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Question Number 172000 by Mikenice last updated on 23/Jun/22
prove that: ((sinx)/(sin3x))+((tanx)/(tan3x))=1
$${prove}\:{that}: \\ $$$$\frac{{sinx}}{{sin}\mathrm{3}{x}}+\frac{{tanx}}{{tan}\mathrm{3}{x}}=\mathrm{1} \\ $$

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