About Cotangent
https://doi.org/10.22405/2226-8383-2023-24-5-167-179
Abstract
In this paper we describe a reasoning method which allows to get relatively simple estimates of cotangent values for angles in the half-interval (0, 𝜋/2 ]. The method is based on the ability of the cotangent to refine some of its estimates that were derived from other considerations. As an illustration of the method we give cotangent estimates for two subclasses of rational functions.
About the Author
Sergey Yurievich Soloviev
Lomonosov Moscow State University
Russian Federation
Russian Federation
doctor of physical and mathematical sciences, professor
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Review
For citations:
Soloviev S.Yu. About Cotangent. Chebyshevskii Sbornik. 2023;24(5):167-179. (In Russ.) https://doi.org/10.22405/2226-8383-2023-24-5-167-179
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