ATAN2

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The ATAN2 function returns the arc tangent of x and y coordinates as an angle expressed in radians. The first and second arguments specify the x and y coordinates, respectively.

expression
The argument must be an expression that returns a value of any built-in numeric, character-string, or graphic-string data type. A string argument is cast to double-precision floating point before evaluating the function. For more information on converting strings to double-precision floating point, see DOUBLE_PRECISION or DOUBLE. If one argument is 0, the other argument must not be 0.

The data type of the result is double-precision floating point. If any argument can be null, the result can be null; if any argument is null, the result is the null value.

Example