Abstract
We study the duplication formulas of triple sine and cosine functions from various expressions point of view.
Citation
Nobushige Kurokawa. Masato Wakayama. "Duplication formulas in triple trigonometry." Proc. Japan Acad. Ser. A Math. Sci. 79 (8) 123 - 127, Oct. 2003. https://doi.org/10.3792/pjaa.79.123
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