正弦函数
sine function Denoted $\sin \theta$, defined as the ratio of the opposite side to the hypotenuse in a right triangle, or the y-coordinate on the unit circle.
CSCA 数学 考试术语
sine function Denoted $\sin \theta$, defined as the ratio of the opposite side to the hypotenuse in a right triangle, or the y-coordinate on the unit circle.
CSCA 数学 考试术语