Far East Journal of Mathematical Education

The Far East Journal of Mathematical Education is a peer-reviewed journal focused on mathematical education. It publishes research papers that enhance understanding of mathematical concepts and encourages the use of technology, statistics, algorithms, and simulations in mathematics learning.

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PROOF WITHOUT WORDS: SINE DIFFERENCE IDENTITY

Authors

  • Long Wang

Keywords:

sine difference identity

DOI:

https://doi.org/10.17654/0973563124013

Abstract

In this paper, we give a pictorial proof of sine difference identity.

Received: October 21, 2024
Accepted: October 30, 2024

References

R. Nelsen, Proofs Without Words, MAA, Washington DC, 1993, pp. 34-35.

Y. Kobayashi, Proofs without words: tangent double angle identity, College Math. J. 44 (2013), 47.

L. Wang, Proofs without words: sine sum identity, College Math. J. 45 (2014), 190.

L. Wang, Proofs without words: cosine difference identity, College Math. J. 45 (2014), 370.

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Published

13-11-2024

Issue

Vol. 26 No. 2 (2024)

Section

Articles

License

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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How to Cite

PROOF WITHOUT WORDS: SINE DIFFERENCE IDENTITY. (2024). Far East Journal of Mathematical Education, 26(2), 123-124. https://doi.org/10.17654/0973563124013