ATN2 (Transact-SQL)

ATN2 (Transact-SQL)

 

THIS TOPIC APPLIES TO: yesSQL Server (starting with 2008)yesAzure SQL DatabaseyesAzure SQL Data Warehouse yesParallel Data Warehouse

Returns the angle, in radians, between the positive x-axis and the ray from the origin to the point (y, x), where x and y are the values of the two specified float expressions.

Topic link icon Transact-SQL Syntax Conventions

-- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse  
  
ATN2 ( float_expression , float_expression )  

float_expression
Is an expression of the float data type.

float

The following example calculates the ATN2 for the specified x and y components.

DECLARE @x float = 35.175643, @y float = 129.44;  
SELECT 'The ATN2 of the angle is: ' + CONVERT(varchar,ATN2(@x,@y ));  
GO  

Here is the result set.

The ATN2 of the angle is: 0.265345                         
(1 row(s) affected)  

The following example calculates the ATN2 for the specified x and y components.

DECLARE @x float = 35.175643, @y float = 129.44;  
SELECT 'The ATN2 of the angle is: ' + CONVERT(varchar,ATN2(@x,@y ));  
GO  

Here is the result set.

The ATN2 of the angle is: 0.265345                         
(1 row(s) affected)  

CAST and CONVERT (Transact-SQL)
float and real (Transact-SQL)
Mathematical Functions (Transact-SQL)

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