yiguolei commented on code in PR #2604:
URL: https://github.com/apache/doris-website/pull/2604#discussion_r2235631427
##########
docs/sql-manual/sql-functions/scalar-functions/numeric-functions/sec.md:
##########
@@ -0,0 +1,54 @@
+---
+{
+ "title": "SEC",
+ "language": "en"
+}
+---
+
+## Description
+
+Returns the secant of x, where x is the value in radians, only input and
output are supported as double. Input null value will return null value.
+
+## Syntax
+
+```sql
+SEC(<x>)
+```
+
+## Parameters
+
+| Parameter | Description |
+| -- | -- |
+| `<x>` | The value for which the secant is to be calculated |
+
+## Return Value
+
+Returns the secant of x.
+
+## Example
+
+```sql
+select sec(1),sec(2),sec(1000);
+```
+
+```text
++--------------------+--------------------+--------------------+
+| sec(1) | sec(2) | sec(1000) |
++--------------------+--------------------+--------------------+
+| 1.8508157176809255 | -2.402997961722381 | 1.7781600385912715 |
++--------------------+--------------------+--------------------+
+```
+
+Input null value.
+
+```sql
+select csc(null);
+```
+
+```text
++--------------------+
+| csc(null) |
++--------------------+
Review Comment:
sec
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