RADIANS

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

Syntax

RADIANS ( numeric_expression )

Arguments

numeric_expression

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

Return Types

Returns the same type as numeric_expression.

Examples

A. Use RADIANS to show 0.0

This 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. Use RADIANS

This example takes a float expression and returns the RADIANS of the given 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)

See Also

CAST and CONVERT

decimal and numeric

float and real

int, smallint, and tinyint

Mathematical Functions

money and smallmoney