COS (Transact-SQL)

**APPLIES TO:** ![yes](media/yes.png)SQL Server (starting with 2008) ![yes](media/yes.png)Azure SQL Database ![yes](media/yes.png)Azure SQL Data Warehouse ![yes](media/yes.png)Parallel Data Warehouse

A mathematical function that returns the trigonometric cosine of the specified angle - measured in radians - in the specified expression.

Topic link icon Transact-SQL Syntax Conventions

Syntax

COS ( float_expression )

Arguments

float_expression
An expression of type float.

Return types

float

Examples

This example returns the COS value of the specified angle:

DECLARE @angle float;  
SET @angle = 14.78;  
SELECT 'The COS of the angle is: ' + CONVERT(varchar,COS(@angle));  
GO

Here is the result set.

The COS of the angle is: -0.599465                        
  
(1 row(s) affected)

Azure SQL Data Warehouse and Azure SQL Data Warehouse Parallel Data Warehouse

This example returns the COS values of the specified angles:

SELECT COS(14.76) AS cosCalc1, COS(-0.1472738) AS cosCalc2;