| 释义 |
secant/ˈsi:k(ə)nt, ˈsek-/ adj. & n. Math. 【数】 ●adj. cutting 正割的 secant line 正割线 ●n. 1 a line cutting a curve at one or more points 正割线 2 the ratio of the hypotenuse to the shorter side adjacent to an acute angle (in a right-angled triangle) (abbr. 缩略 : sec) 正割(直角三角形中斜边与锐角邻边的比率) [French sécant(e) from Latin secare secant- ‘to cut’] |