Skip to content

acos-transact-sql.md

Latest commit

 

History

History
73 lines (58 loc) · 2.17 KB

acos-transact-sql.md

File metadata and controls

73 lines (58 loc) · 2.17 KB

title: "ACOS (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.component: "t-sql|functions" ms.reviewer: "" ms.suite: "sql" ms.technology: t-sql ms.tgt_pltfrm: "" ms.topic: "language-reference" f1_keywords:

  • "ACOS"
  • "ACOS_TSQL" dev_langs:
  • "TSQL" helpviewer_keywords:
  • "cosine"
  • "ACOS function"
  • "arccosine" ms.assetid: 4ec6b46e-9438-4f0f-8b96-461edd84280a caps.latest.revision: 43 author: edmacauley ms.author: edmaca manager: craigg monikerRange: ">= aps-pdw-2016 || = azuresqldb-current || = azure-sqldw-latest || >= sql-server-2016 || = sqlallproducts-allversions"

ACOS (Transact-SQL)

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

A function that returns the angle, in radians, whose cosine is the specified float expression. This is also called arccosine.

Topic link icon Transact-SQL Syntax Conventions

Syntax

ACOS ( float_expression )

Arguments

float_expression
An expression of either type float or of a type that can implicitly convert to float. Only a value ranging from -1.00 to 1.00 is valid. Values outside this range return NULL, and ASIN will report a domain error.

Return Types

float

Examples

This example returns the ACOS value of the specified number.

SET NOCOUNT OFF;  
DECLARE @cos float;  
SET @cos = -1.0;  
SELECT 'The ACOS of the number is: ' + CONVERT(varchar, ACOS(@cos));

[!INCLUDEssResult]

---------------------------------   
The ACOS of the number is: 3.14159   
  
(1 row(s) affected)

See also

Mathematical Functions (Transact-SQL)
Functions