ASA SQL Reference
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ATAN function [Numeric]

Function 

Returns the arc-tangent, in radians, of a number.

Syntax 

ATAN ( numeric-expression )

Parameters 

numeric-expression    The tangent of the angle.

Standards and compatibility 

• SQL/92    Vendor extension.

• SQL/99    Vendor extension.

• Sybase    Compatible with Adaptive Server Enterprise.

See also 

ACOS function [Numeric]

ASIN function [Numeric]

ATN2 function [Numeric]

TAN function [Numeric]

Example 

The following statement returns the value 0.479519.

SELECT ATAN( 0.52 )