asin-transact-sql.md

title	ASIN (Transact-SQL)
description	ASIN (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	ASIN_TSQL ASIN
helpviewer_keywords	ASIN function sine arcsine
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

ASIN (Transact-SQL)

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

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

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

Syntax

ASIN ( 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. For values outside this range, no value is returned, and ASIN will report a domain error.

Return types

float

Examples

This example takes a float expression and returns the ASIN value of the specified angle.

/* The first value will be -1.01. This fails because the value is   
outside the range.*/  
DECLARE @angle FLOAT  
SET @angle = -1.01  
SELECT 'The ASIN of the angle is: ' + CONVERT(VARCHAR, ASIN(@angle))  
GO  
  
-- The next value is -1.00.  
DECLARE @angle FLOAT  
SET @angle = -1.00  
SELECT 'The ASIN of the angle is: ' + CONVERT(VARCHAR, ASIN(@angle))  
GO  
  
-- The next value is 0.1472738.  
DECLARE @angle FLOAT  
SET @angle = 0.1472738  
SELECT 'The ASIN of the angle is: ' + CONVERT(VARCHAR, ASIN(@angle))  
GO  

[!INCLUDEssResult]

-------------------------  
.Net SqlClient Data Provider: Msg 3622, Level 16, State 1, Line 3  
A domain error occurred.  
  
---------------------------------   
The ASIN of the angle is: -1.5708                          
  
(1 row(s) affected)  
  
----------------------------------   
The ASIN of the angle is: 0.147811                         
  
(1 row(s) affected)  

Examples: [!INCLUDEssazuresynapse-md] and [!INCLUDEssPDW]

This example returns the arcsine of 1.00.

SELECT ASIN(1.00) AS asinCalc;  

This example returns an error, because it requests the arcsine for a value outside the allowed range.

SELECT ASIN(1.1472738) AS asinCalc;  

See also

CEILING (Transact-SQL)
Mathematical Functions (Transact-SQL)
SET ARITHIGNORE (Transact-SQL)
SET ARITHABORT (Transact-SQL)