---
title: "SIN (Transact-SQL)"
description: "SIN (Transact-SQL)"
author: MikeRayMSFT
ms.author: mikeray
ms.date: "03/03/2017"
ms.service: sql
ms.subservice: t-sql
ms.topic: reference
f1_keywords:
  - "SIN_TSQL"
  - "SIN"
helpviewer_keywords:
  - "SIN function"
  - "sine"
dev_langs:
  - "TSQL"
monikerRange: ">= aps-pdw-2016 || = azuresqldb-current || = azure-sqldw-latest || >= sql-server-2016 || >= sql-server-linux-2017 || = azuresqldb-mi-current||=fabric"
---
# SIN (Transact-SQL)
[!INCLUDE [sql-asdb-asdbmi-asa-pdw-fabricse-fabricdw](../../includes/applies-to-version/sql-asdb-asdbmi-asa-pdw-fabricse-fabricdw.md)]

  Returns the trigonometric sine of the specified angle, in radians, and in an approximate numeric, **float**, expression.  
  
 :::image type="icon" source="../../includes/media/topic-link-icon.svg" border="false"::: [Transact-SQL syntax conventions](../../t-sql/language-elements/transact-sql-syntax-conventions-transact-sql.md)  
  
## Syntax  
  
```syntaxsql
SIN ( float_expression )  
```  
  

## Arguments
 *float_expression*  
 Is an [expression](../../t-sql/language-elements/expressions-transact-sql.md) of type **float** or of a type that can be implicitly converted to float, in radians.
  
## Return Types  
 **float**  
  
## Examples  
 The following example calculates the SIN for a specified angle.  
  
```sql  
DECLARE @angle FLOAT;  
SET @angle = 45.175643;  
SELECT 'The SIN of the angle is: ' + CONVERT(VARCHAR, SIN(@angle));  
GO  
```  
  
 [!INCLUDE[ssResult](../../includes/ssresult-md.md)]  
  
```  
The SIN of the angle is: 0.929607                         
  
(1 row(s) affected)  
```  
  
## Examples: [!INCLUDE[ssazuresynapse-md](../../includes/ssazuresynapse-md.md)] and [!INCLUDE[ssPDW](../../includes/sspdw-md.md)]  
 The following example calculates the sine for a specified angle.  
  
```sql  
SELECT SIN(45.175643);  
```  
  
 [!INCLUDE[ssResult](../../includes/ssresult-md.md)]  
  
 ```
---------  
0.929607
```  
  
## See Also  
 [Mathematical Functions (Transact-SQL)](../../t-sql/functions/mathematical-functions-transact-sql.md)