Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, see the [ blog post ](https://amazonaws-china.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# COT function
COT

COT is a trigonometric function that returns the cotangent of a number. The input parameter must be nonzero. 

## Syntax
Syntax

```
COT(number)
```

## Argument
Argument

 *number*   
The input parameter is a `DOUBLE PRECISION` number. 

## Return type
Return type

`DOUBLE PRECISION`

## Examples
Examples

To return the cotangent of 1, use the following example. 

```
SELECT COT(1);

+--------------------+
|        cot         |
+--------------------+
| 0.6420926159343306 |
+--------------------+
```