A geometrical proof of certain trigonometrical formulae.
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Publication:1518375
DOI10.1017/S0013091500032077zbMATH Open28.0455.02OpenAlexW2154602205MaRDI QIDQ1518375
Publication date: 1897
Published in: Proceedings of the Edinburgh Mathematical Society (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1017/s0013091500032077
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