Meanings
nounlaw of cosines (uncountable)
- uncountablemathematicsA generalization of the Pythagorean theorem that relates the lengths of the sides of a triangle to the cosine of one of its angles.
Synonyms: cosine formula, cosine law, cosine rule
Synonyms & antonyms
nounA generalization of the Pythagorean theorem that relates the lengths of the sides of a triangle to the cosine of one of its angles.
Translations
Chinese Mandarin 餘弦定理 /余弦定理
- 餘弦定理 /余弦定理 (yúxián dìnglǐ)statement
Danish cosinusrelationen
- cosinusrelationenstatement
Finnish kosinilause
- kosinilausestatement
German Kosinussatz
- Kosinussatzstatement
Hungarian koszinusztétel
- koszinusztételstatement
Italian teorema del coseno
- teorema del cosenostatement
Romanian teorema cosinusului
- teorema cosinusuluistatement
Spanish ley de los cosenos
- ley de los cosenosstatement
Tagalog kasinwaying batas
- kasinwaying batasstatement
Cite this entry
APA
law of cosines. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/law%20of%20cosines
MLA
“law of cosines.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/law%20of%20cosines. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “law of cosines,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/law%20of%20cosines.
Source: law of cosines on Wiktionary, CC BY-SA 4.0.