secant
adj. 割的；切的；交叉的
n. 割线；正割
例句
Most of us can’t tell our secant from our cotangent.
我们中的大多数不能分辨正切余切。
Most of us can't tell our secant from our cotangent.
A secant is defined as line passing through two points of the curve.
割线的定义是一条通过曲线上两点的直线。
