cosine

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Etymology

From , short for complementi sinus in Latin, meaning “sine of the complement”.

Pronunciation

• (British) IPA: /ˈkəʊ.saɪn/
• (America) IPA: /ˈkoʊ.saɪn/
• (Australia) IPA: /ˈkəʉ.sɑɪn/

Noun

cosine (plural cosines)

1. (trigonometry) In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos

Related terms

• arccosine
• sine

Translations

• French: cosinus
• German: Kosinus
• Italian: coseno
• Portuguese: co-seno
• Russian: ко́синус
• Spanish: coseno

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