BiteTheDDDDt commented on code in PR #2604:
URL: https://github.com/apache/doris-website/pull/2604#discussion_r2221984772
##########
docs/sql-manual/sql-functions/scalar-functions/numeric-functions/cot.md:
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@@ -0,0 +1,40 @@
+---
+{
+ "title": "COT",
+ "language": "en"
+}
+---
+
+## Description
+
+Returns the cotangent of x, where x is the value in radians, only input and
output are supported as double.
+
+## Syntax
+
+```sql
+COT(<x>)
+```
+
+## Parameters
+
+| Parameter | Description |
+| -- | -- |
+| `<x>` | The value for which the cotangent is to be calculated |
Review Comment:
输入null返回null，这个是绝大部分函数统一的默认行为。
三角函数输入一些特殊值的行为，doris本身还缺少完整梳理，给不了一个准确的说法，比如目前fe和be计算得到的结果可能不一样，或者有时候是inf，有时候是null。
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