| 释义 |
cosine
UK ['kəʊ.saɪn] US ['koʊ-] (written abbreviation cos) specialized
noun countable
■(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) 余弦 Compare sine ; tangent |