cos-transact-sql.md

---

title: "COS (Transact-SQL) | Microsoft Docs" ms.custom: "" ms.date: "07/24/2017" ms.prod: "sql" ms.prod_service: "database-engine, sql-database, sql-data-warehouse, pdw" ms.service: "" ms.component: "t-sql|functions" ms.reviewer: "" ms.suite: "sql" ms.technology:

• "database-engine" ms.tgt_pltfrm: "" ms.topic: "language-reference" f1_keywords:
• "COS"
• "COS_TSQL" dev_langs:
• "TSQL" helpviewer_keywords:
• "cosine"
• "COS function" ms.assetid: c9fa8ae1-3373-4f3e-9b97-fa05077c1040 caps.latest.revision: 21 author: "edmacauley" ms.author: "edmaca" manager: "craigg" ms.workload: "Inactive" monikerRange: ">= aps-pdw-2016 || = azuresqldb-current || = azure-sqldw-latest || >= sql-server-2016 || = sqlallproducts-allversions"

---

COS (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-all-md]

Is a mathematical function that returns the trigonometric cosine of the specified angle, in radians, in the specified expression.

Transact-SQL Syntax Conventions

Syntax

COS ( float_expression )  

Arguments

float_expression
Is an expression of type float.

Return types

float

Examples

The following example returns the COS of the specific 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)  

Examples

[!INCLUDEssSDWfull] and [!INCLUDEssPDW]

The following example returns the COS of the specific angle.

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

[!INCLUDEssResult]

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

See also

Mathematical Functions (Transact-SQL)