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/). 

# 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
<a name="r_SIN-synopsis"></a>

```
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 |
+-------------------------+
```