正弦函数
sine function In a right triangle, the ratio of the length of the side opposite the angle to the hypotenuse; on the unit circle, the $y$-coordinate of the point
CSCA 数学 考试术语
sine function In a right triangle, the ratio of the length of the side opposite the angle to the hypotenuse; on the unit circle, the $y$-coordinate of the point
CSCA 数学 考试术语