你当前正在访问 Microsoft Azure Global Edition 技术文档网站。 如果需要访问由世纪互联运营的 Microsoft Azure 中国技术文档网站，请访问 https://docs.azure.cn。
asin()
Applies to: ✅ Microsoft Fabric ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel
Calculates the angle whose sine is the specified number, or the arc sine. This is the inverse operation of sin().
Syntax
asin(x)
Learn more about syntax conventions.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| x | real |
✔️ | A real number in range [-1, 1] used to calculate the arc sine. |
Returns
Returns the value of the arc sine of x. Returns null if x < -1 or x > 1.
Example
asin(0.5)
Output
| result |
|---|
| 1.2532358975033751 |