单词	cosine
释义	English American cosinenoun [ C ] uk/ˈkəʊ.saɪn/us/ˈkoʊ.saɪn/written abbreviation cos specialized (in a triangle that has one angle of 90°) the ratio of the length of the side next to an angle less than 90°, divided by the length of the hypotenuse (= the side opposite the 90° angle) Compare sine tangent Thesaurus: synonyms and related words Geometry: parts of geometrical shapes angle circumference corresponding sides crosswise diameter frustum hemisphere hypotenuse line line segment node perimeter plane quadrant radius section side sin 1 vertex See more results » cosinenoun [ C ] /ˈkoʊˌsɑɪn/abbreviation cos trigonometry in a triangle that has one angle of 90°, the ratio (= relationship) of the length of the side next to an angle less than 90°, divided by the length of the hypotenuse (= the side opposite the 90° angle)
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