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Trigonometric Sums via Lagrange Interpolation

By means of the Lagrange interpolation, we derive two trigonometric identities that are utilized to evaluate, in closed forms, eight classes of power sums of trigonometric functions over equally distributed angles around the unit circle. When the <i>m</i>th term is removed from the sums, four classe...

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Bibliographic Details
Main Authors: Marta Na Chen, Wenchang Chu, Xiaoyuan Wang
Format: Artigo
Language:Inglês
Published: MDPI AG 2025-09-01
Series:Axioms
Subjects:
Online Access:https://www.mdpi.com/2075-1680/14/10/724
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