| 释义 |
co·sineBrE /ˈkəʊsaɪn/ NAmE /ˈkoʊsaɪn/ noun (abbreviation cos ) (mathematics数学) the ratio of the length of the side next to an acute angle in a right-angledtriangle to the length of the longest side (= the hypotenuse)余弦 ➡ compare sine, tangent (2 ) |