Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, 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/) that was published on June 30, 2025. 

# SIN function
<a name="r_SIN"></a>

SIN is a trigonometric function that returns the sine of a number. The return value is between `-1` and `1`. 

## Syntax
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```
SIN(number)
```

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

 *number*   
A `DOUBLE PRECISION` number in radians. 

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

`DOUBLE PRECISION` 

## Examples
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To return the sine of `-PI`, use the following example.

```
SELECT SIN(-PI());

+-------------------------+
|           sin           |
+-------------------------+
| -0.00000000000000012246 |
+-------------------------+
```