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BNC: 29985 COCA: 38566
cosine
noun [C] maths /ˈkəʊˌsaɪn/
singularcosine
pluralcosines
  1. in a right-angled triangle, the measurement of an acute angle that is equal to the length of the side between the angle and the right angle divided by the length of the hypotenuse 余弦
     Synonyms and related words

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