余弦

日本語

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余弦

Where it comes from

余角に対して定義した正弦に一致することから。

noun よげん · 餘弦

三角関数直角三角形における、隣辺の斜辺に対する比。またその比の値を与える関数。コサイン (cos)。

In English

cosine trigonometric function

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MLA

"余弦." Wiktionary, via Micwyn, micwyn.com/word/ja/%E4%BD%99%E5%BC%A6. Accessed 6 Nov. 2026.

APA

余弦. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/ja/%E4%BD%99%E5%BC%A6

Chicago

"余弦." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/ja/%E4%BD%99%E5%BC%A6.

BibTeX

@misc{micwyn_2026,
  title = {余弦},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/ja/%E4%BD%99%E5%BC%A6},
  urldate = {2026-11-06}
}