RADIANS (T-SQL)

Returns radians given a numeric expression in degrees.

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