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- User Defined Functions
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- Function _ArrayAdd
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- Language Reference
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文章来源于网络收集而来，版权归原创者所有，如有侵权请及时联系！
Function ACos
ACos
求某个数的反余弦值(arcCosine)。
ACos ( 表达式 )
参数
| 表达式 | -1到1（包括-1和1在内）之间的任意数。 |
返回值
返回表达式的反余弦值（反三角函数的一种），结果以弧度表示。注意
ACos(x) 在数学定义上只可以接受 -1 < x < 1，因此若x的值不在该范围内则返回值为 -1。相关
Sin, Cos, Tan, ASin, ATan示例
$x = ACos(0.5)
$pi = 3.14159265358979
$radToDeg = 180 / $pi
$y = ACos(-1) * $radToDeg ;-1的反余弦值是 180°
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