SIN (Transact-SQL)
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
SQL analytics endpoint in Microsoft Fabric
Warehouse in Microsoft Fabric
Returns the trigonometric sine of the specified angle, in radians, and in an approximate numeric, float, expression.
Transact-SQL syntax conventions
Syntax
SIN ( float_expression )
Arguments
float_expression
Is an expression 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.
DECLARE @angle FLOAT;
SET @angle = 45.175643;
SELECT 'The SIN of the angle is: ' + CONVERT(VARCHAR, SIN(@angle));
GO
Here's the result set.
The SIN of the angle is: 0.929607
(1 row(s) affected)
Examples: Azure Synapse Analytics and Analytics Platform System (PDW)
The following example calculates the sine for a specified angle.
SELECT SIN(45.175643);
Here's the result set.
---------
0.929607