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title: "TAN (Transact-SQL) | Microsoft Docs" ms.custom: "" ms.date: "03/03/2017" ms.prod: sql ms.prod_service: "database-engine, sql-database, sql-data-warehouse, pdw" ms.component: "t-sql|functions" ms.reviewer: "" ms.suite: "sql" ms.technology: t-sql ms.tgt_pltfrm: "" ms.topic: "language-reference" f1_keywords:

  • "TAN_TSQL"
  • "TAN" dev_langs:
  • "TSQL" helpviewer_keywords:
  • "TAN function"
  • "tangent" ms.assetid: f679fa6a-5739-484b-9450-fb3400d4f30c caps.latest.revision: 22 author: edmacauley ms.author: edmaca manager: craigg monikerRange: ">= aps-pdw-2016 || = azuresqldb-current || = azure-sqldw-latest || >= sql-server-2016 || = sqlallproducts-allversions"

TAN (Transact-SQL)

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

Returns the tangent of the input expression.

Topic link icon Transact-SQL Syntax Conventions

Syntax

TAN ( float_expression )

Arguments

float_expression
Is an expression of type float or of a type that can be implicitly converted to float, interpreted as number of radians.

Return Types

float

Examples

The following example returns the tangent of PI()/2.

SELECT TAN(PI()/2);

[!INCLUDEssResult]

----------------------  
1.6331778728383844E+16

Examples: [!INCLUDEssSDWfull] and [!INCLUDEssPDW]

The following example returns the tangent of .45.

SELECT TAN(.45);

[!INCLUDEssResult]

--------  
0.48

See Also

Mathematical Functions (Transact-SQL)