VistaDB 6
VistaDB / Developer's Guide / SQL Reference / Functions / Mathematical Functions / ATN2
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    Arc Tangent of Y/X

    This function returns ATN(y/x) and is specific only to SQL Server. We have included it for compatibility.

    From SQL Server documentation:

    Returns the angle, in radians, between the positive x-axis and the ray from the origin to the point (y, x), where x and y are the values of the two specified float expressions.

    The function may be simulated by using the following formula:

    Atn2 = ATN(y / x)


    This function is not part of the SQL Spec, but is included for SQL Server compatibility.


    SELECT ATN2(35.175643,129.44)
    RETURNS:  0.265344532064832
    See Also