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ATAN2 function [Numeric]

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

ATAN2 ( numeric-expression-1, numeric-expression-2 )

numeric-expression-1    The numerator in the ratio whose arc-tangent is calculated.

numeric-expression-2    The denominator in the ratio whose arc-tangent is calculated.

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

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

• SQL/2003    Vendor extension.

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

SELECT ATAN2( 0.52, 0.60 );