RADIANS (Transact-SQL)

RADIANS (Transact-SQL)

 

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

Returns radians when a numeric expression, in degrees, is entered.

Topic link icon Transact-SQL Syntax Conventions

  
RADIANS ( numeric_expression )  

-- Azure SQL Data Warehouse and Parallel Data Warehouse  
RADIANS (numeric_expression )  

numeric_expression
Is an expression of the exact numeric or approximate numeric data type category, except for the bit data type.

Returns the same type as numeric_expression.

A. Using RADIANS to show 0.0

The following example returns a result of 0.0 because the numeric expression to convert to radians is too small for the RADIANS function.

SELECT RADIANS(1e-307)  
GO  

Here is the result set.

-------------------   
0.0                        
(1 row(s) affected)  

B. Using RADIANS to return the equivalent angle of a float expression.

The following example takes a float expression and returns the RADIANS of the specified angle.

-- First value is -45.01.  
DECLARE @angle float  
SET @angle = -45.01  
SELECT 'The RADIANS of the angle is: ' +  
   CONVERT(varchar, RADIANS(@angle))  
GO  
-- Next value is -181.01.  
DECLARE @angle float  
SET @angle = -181.01  
SELECT 'The RADIANS of the angle is: ' +  
   CONVERT(varchar, RADIANS(@angle))  
GO  
-- Next value is 0.00.  
DECLARE @angle float  
SET @angle = 0.00  
SELECT 'The RADIANS of the angle is: ' +  
   CONVERT(varchar, RADIANS(@angle))  
GO  
-- Next value is 0.1472738.  
DECLARE @angle float  
SET @angle = 0.1472738  
SELECT 'The RADIANS of the angle is: ' +  
    CONVERT(varchar, RADIANS(@angle))  
GO  
-- Last value is 197.1099392.  
DECLARE @angle float  
SET @angle = 197.1099392  
SELECT 'The RADIANS of the angle is: ' +  
   CONVERT(varchar, RADIANS(@angle))  
GO  

Here is the result set.

---------------------------------------   
The RADIANS of the angle is: -0.785573                        
(1 row(s) affected)  
---------------------------------------   
The RADIANS of the angle is: -3.15922                         
(1 row(s) affected)  
---------------------------------------   
The RADIANS of the angle is: 0                                
(1 row(s) affected)  
---------------------------------------   
The RADIANS of the angle is: 0.00257041                       
 (1 row(s) affected)  
---------------------------------------   
The RADIANS of the angle is: 3.44022                          
(1 row(s) affected)  

C. Using RADIANS to show 0.0

The following example returns a result of 0.0 because the numeric expression to convert to radians is too small for the RADIANS function.

SELECT RADIANS(1e-307)  
GO  

Here is the result set.

-------------------   
0.0                        
(1 row(s) affected)  

CAST and CONVERT (Transact-SQL)
decimal and numeric (Transact-SQL)
float and real (Transact-SQL)
int, bigint, smallint, and tinyint (Transact-SQL)
Mathematical Functions (Transact-SQL)
money and smallmoney (Transact-SQL)

Community Additions

ADD
Show:
© 2016 Microsoft