Returns the arc-tangent, in radians, of the ratio of two numbers.

Syntax

{ ATN2 | ATAN2 }( numeric-expression-1, numeric-expression-2 )

Parameters

Remarks

This function converts its arguments to DOUBLE, performs the computation in double-precision floating point, and returns a DOUBLE as the result.

See also

• ACOS function [Numeric]
• ASIN function [Numeric]
• ATAN function [Numeric]
• TAN function [Numeric]

Standards and compatibility

Example

The following statement returns the arc-tangent value for the ratio 0.52 to 0.60.

SELECT ATAN2( 0.52, 0.60 );