cosine

Pronunciation

• (UK) IPA ^(key): /ˈkəʊ.saɪn/
• (US) IPA ^(key): /ˈkoʊ.saɪn/
• (AU) IPA ^(key): /ˈkəʉ.sɑɪn/

• Audio (US)

  (file)

• Homophone: cosign

Noun

Singular cosine

Plural cosines

1. (countable) (mathematics) The cosine is the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse.