余切函数
cotangent function Denoted $\cot \theta$, defined as the ratio of cosine to sine, i.e., $\cot \theta = \frac{\cos \theta}{\sin \theta}$.
CSCA 数学 考试术语
cotangent function Denoted $\cot \theta$, defined as the ratio of cosine to sine, i.e., $\cot \theta = \frac{\cos \theta}{\sin \theta}$.
CSCA 数学 考试术语