For anyone that needs a little refresher course, the sine function gives the ratio of the opposite side of a given Angle in a right triangle to the hypotenuse.
一些人需要复习一点数学课程，正弦的作用是给出在一个直角三角形中的一个已知角所对应的一条边与直角三角形斜边之间的比率。
The side of a right triangle opposite the right angle .
纸的两个纸规边要成直角。
The viewing Angle from the building is slightly inclined, giving an even more dramatic view of the strikingly beautiful mountains on the opposite side of the narrow valley.
建筑的视角略有倾斜，从狭窄的山谷对面看到美丽的山景，给人一种戏剧化的视觉效果。
Angle two is the backhand return of Angle one, traveling diagonally from your left to your right from the opposite side of the opponent's body.
角度2是角度1的反方向动作，从你的左侧斜到你的右侧，划过对手异侧的身体。
Angle two is the backhand return of Angle one, traveling diagonally from your left to your right from the opposite side of the opponent's body.
角度2是角度1的反方向动作，从你的左侧斜到你的右侧，划过对手异侧的身体。
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