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109.36 Proof without words: Lagrange’s sine identity

Published online by Cambridge University Press:  15 October 2025

Nam Gu Heo*
Affiliation:
Sunchon National University, 255 Junganno, Suncheon, Jeonnam 57922, KOREA e-mail: ngheo@scnu.ac.kr

Abstract

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Notes
Copyright
© The Authors, 2025 Published by Cambridge University Press on behalf of The Mathematical Association

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