freeCodeCamp/guide/chinese/mathematics/converting-between-radians-and-degrees/index.md

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Converting Between Radians and Degrees	在弧度和度数之间转换

在弧度和度数之间转换

通用配方

以下公式可用于在弧度和度数之间进行转换：

r = d * (π / 180) 
 
 d = r * (180 / π) 
 
 where r is the angle in radians and d is the angle in degrees. 

例子

将2π/ 3弧度转换为度数：

2π/3 * 180/π = 360π/3π = 360/3 = 120 degrees 

将30度转换为弧度：

30 * π/180 = 30π/180 = π/6 or (1/6)π radians 
 
 Note: Radians are usually expressed in terms of π instead of a rounded decimal as this form represents the actual value rather than an approximation.