正割函数
secant function Denoted $\sec \theta$, defined as the reciprocal of cosine, i.e., $\sec \theta = \frac{1}{\cos \theta}$.
CSCA 数学 考试术语
secant function Denoted $\sec \theta$, defined as the reciprocal of cosine, i.e., $\sec \theta = \frac{1}{\cos \theta}$.
CSCA 数学 考试术语