ra
dian
复数形式
radians
1
弧度, 测量角度的单位，定义为圆的半径沿其边缘放置时所形成的角度
a unit for measuring angles, defined by the angle made when the radius of a circle is laid along its edge
- An angle of 1 radian means the arc length is the same as the radius of the circle.
1 弧度的角度意味着弧长与圆的半径相同。
- Trigonometric functions like sine and cosine often use radians.
像正弦和余弦这样的三角函数经常使用弧度。
- The unit circle helps visualize angles measured in radians.
单位圆有助于可视化以弧度测量的角度。
- Engineers use radians to calculate rotational motion.
工程师使用弧度来计算旋转运动。
- Knowing the relationship between degrees and radians is essential for trigonometry.
了解度和弧度之间的关系对三角学至关重要。