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://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# TAN function
<a name="r_TAN"></a>

TAN is a trigonometric function that returns the tangent of a number. The input argument is a number (in radians). 

## Syntax
<a name="r_TAN-synopsis"></a>

```
TAN(number)
```

## Argument
<a name="r_TAN-argument"></a>

 *number*   
A `DOUBLE PRECISION` number. 

## Return type
<a name="r_TAN-return-type"></a>

`DOUBLE PRECISION`

## Examples
<a name="r_TAN-examples"></a>

To return the tangent of zero, use the following example. 

```
SELECT TAN(0);

+-----+
| tan |
+-----+
|   0 |
+-----+
```