radian是什么意思,radian怎么读,radian的意思

radian怎么读/radian的发音

英： 　　美：

radian是什么意思

音标: 英 [ˈreɪdɪən] 美 [ˈredɪən]

n. 弧度

[计] 弧度

n. the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)

radian的用法和例句：

1. One radian is the angle subtended at the center of a circle by an arc equal in length to the radius of the circle.

一弧度是圆心所对的圆弧长度等于圆半径的角度。

2. To convert degrees to radians, multiply the degree measure by π/180.

要将度转换为弧度，需要将度数乘以π/180。

3. The angle of 2π radians corresponds to a full circle.

2π弧度的角度对应一个完整的圆。

4. Most calculations in trigonometry are done using radians rather than degrees.

在三角学中，大多数计算都是使用弧度而不是度来进行的。

5. A full rotation is 360 degrees or 2π radians.

完整的一圈是360度或2π弧度。

6. The sine of a half radian is equal to 1 divided by the square root of 2.

半弧度的正弦值等于1除以根号2。

7. If they're not set to radians, you're gonna have a bad time.

如果没有设置为弧度 那可就糟了

8. Sometimes in radians, sometimes in degrees, depending on my level of whimsy.

有时用弧度 有时用角度数 看我那天心情如何啦

9. Everybody check and make sure your graphing calculators are set to radians.

大家检查一下 确定 你们的图形计算器已经设定为弧度

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