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In a right triangle the hypotenuse of whish is 1,the length of a side opposite an acuteangle is the sine of this angle. 一个斜边为1的直角三角形的一个角的对边的长就是这个角的正弦，以角为自变量，它的正弦为因变量的函数成为正弦函数，它的图像称为正弦曲线。
side opposite an angle 角的对边
The plant was growing at an angle. 植物呈一定角度生长。
The famous tower of Pisa leans at an angle. 有名的比萨塔是斜的。
The hypotenuse of a right-angled triangle is the side opposite its right angle. 斜边是直角三角形直角相对的那条边。
The earth's axis is titled at an angle of about 231. 地轴倾斜成约二百三十一度角。
On the side opposite to the seal, the impulse ring and sensor body form an effective labyrinth seal. 在密封件对侧,脉冲和传感器主体组成了一个有效的迷宫式密封。
The side opposite the towpath is being faced with bricks. 牵道的对面一边用砖块盖了起来。
The steep rock seems to be growing at an angle. 这块陡直的岩石似乎在以一定角度生长。
For arrangements where the bearing is mounted on an adapter sleeve, relubrication should be made at the side opposite the sleeve nut. 对于轴承是安装在紧定套上的配置来说,应在与套筒螺母相对的一面提供油脂。
An angle in a semicircle is a right angle. 半圆所对的圆周角是直角。
Use your compass to bisect an angle. 用圆规把一个角二等分。
The two roads lie at an angle of about45 degrees. 这两条路交叉成45度角。
The two roads lie at an angle of about 45 degrees. 这两条路交叉成45度角。
Arc sine x is an angle whose sine is x. 反正弦x是一个其弦为x的角。
An angle of 90°is called a right angle. 九十度角称为直角。
The bone extending from the elbow to the wrist on the side opposite to the thumb in human beings. 尺骨在人体上，与大拇指相反且从肘部延伸到手腕的骨头
The two lines are united at an angle of 45°. 两线以45度角结合。
Vee Orifice option is shown on drawing with phantom lines. Flow must be from side opposite the seat. 形流道选项在图中用虚线显示。流体必须从阀座的侧对面流过。
His hat was tilted slightly at an angle. 他的帽子有点歪。