| 释义 |
cosine/ˈkəʊsaɪn ||; ˈkosaɪn/noun [c] (mathematics数学) (abbr cos) the ratioof the length of the side next to an acute angle(= one that is less than 90°)to the length of the longest side(the hypotenuse)in a right-angledtriangle 余弦（三角形中贴近锐角的一边与斜边之比） ☞compare sine and tangent. 与sine及tangent比较。 |