ATAN (T-SQL)

Returns the angle in radians whose tangent is the given float expression (also called arctangent).

Syntax

ATAN(float_expression)

Arguments

float_expression

Is an expression of the type float.

Return Types

float

Examples

This example takes a float expression and returns the ATAN of the given angle.

SELECT 'The ATAN of -45.01 is: ' + CONVERT(varchar, ATAN(-45.01))

SELECT 'The ATAN of -181.01 is: ' + CONVERT(varchar, ATAN(-181.01))

SELECT 'The ATAN of 0 is: ' + CONVERT(varchar, ATAN(0))

SELECT 'The ATAN of 0.1472738 is: ' + CONVERT(varchar, ATAN(0.1472738))

SELECT 'The ATAN of 197.1099392 is: ' + CONVERT(varchar, ATAN(197.1099392))

GO

Here is the result set:

--------------------------------------------------------

The ATAN of -45.01 is: -1.54858                      

(1 row(s) affected)

--------------------------------------------------------

The ATAN of -181.01 is: -1.56527                      

(1 row(s) affected)

--------------------------------------------------------

The ATAN of 0 is: 0                             

(1 row(s) affected)

--------------------------------------------------------

The ATAN of 0.1472738 is: 0.146223                      

(1 row(s) affected)

--------------------------------------------------------

The ATAN of 197.1099392 is: 1.56572                       

(1 row(s) affected)

See Also