Cosine
/ˈkəʊ.saɪn/
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Definition
(noun) 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
Sentence Examples
The functions sine and cosine take values between -1 and 1 (-1 and 1 included).
"Eh? Is the tangent cosine divided by sine?" "Other way round!"
CEFR Practice Quiz
The functions sine and ____ take values between -1 and 1 (-1 and 1 included).