Phrase guide

law of cosines

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

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Pronunciation

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1

noun

Meaning 1

A generalization of the Pythagorean theorem that relates the lengths of the sides of a triangle to the cosine of one of its angles.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: mathematics, sciences, trigonometry

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

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Across languages

Translations

10 source translations are retained for this English entry.

  • Azerbaijani: kosinuslar teoremi — statement
  • Chinese Mandarin: 餘弦定理 /余弦定理 (yúxián dìnglǐ) — statement
  • Danish: cosinusrelationen — statement
  • Finnish: kosinilause — statement
  • German: Kosinussatz — statement
  • Hungarian: koszinusztétel — statement
  • Italian: teorema del coseno — statement
  • Romanian: teorema cosinusului — statement
  • Spanish: ley de los cosenos — statement
  • Tagalog: kasinwaying batas — statement