Abstract
Trigonometric identities is an important topic in mathematics. Finding theta function analogues for certain well-known trigonometric identities is very interesting. In this paper, we apply the theory of elliptic functions to establish several theta function identities. These identities are exactly theta function analogues for related well-known trigonometric identities.
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Acknowledgements
The author would like to thank the referees for their careful reading of the manuscript and helpful comments. This work was partially supported by the National Natural Science Foundation of China (Grant No. 11801451).
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He, B. On certain trigonometric identities. RACSAM 113, 3369–3373 (2019). https://doi.org/10.1007/s13398-019-00702-8
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DOI: https://doi.org/10.1007/s13398-019-00702-8