cos-transact-sql.md

title	COS (Transact-SQL)
description	COS (Transact-SQL)
author	markingmyname
ms.author	maghan
ms.date	07/24/2017
ms.service	sql
ms.subservice	t-sql
ms.topic	reference
ms.custom	ignite-2025
f1_keywords	COS COS_TSQL
helpviewer_keywords	cosine COS function
dev_langs	TSQL
monikerRange	>=aps-pdw-2016 || =azuresqldb-current || =azure-sqldw-latest || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric || =fabric-sqldb

COS (Transact-SQL)

[!INCLUDE sql-asdb-asdbmi-asa-pdw-fabricse-fabricdw-fabricsqldb]

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

:::image type="icon" source="../../includes/media/topic-link-icon.svg" border="false"::: 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  

[!INCLUDEssResult]

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

[!INCLUDEssazuresynapse-md] and [!INCLUDEssPDW]

This example returns the COS values of the specified angles:

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

[!INCLUDEssResult]

cosCalc1  cosCalc2
--------  --------
-0.58     0.99

See also

Mathematical Functions (Transact-SQL)