arctanba

Arctanba is a nonstandard term that appears in sporadic mathematical writing and in some programming contexts as a variant or extension of the arctangent function. It is not part of the conventional mathematical nomenclature, and there is no universally agreed-upon definition. When encountered, its meaning must be established from the surrounding text or from formal documentation.

Because arctanba is not standard, readers may see several informal interpretations. One common guess is arctan(ab), the arctangent of the product of two quantities a and b. Another is arctan(b/a), the arctangent of a ratio. A further possibility is a two-argument form akin to arctan2(y, x), intended to compute an angle from two coordinates represented by a and b. In programming, arctanba can also be a user-defined function name with behavior defined by the specific library or codebase.

Due to the lack of standardization, it is essential to consult the source's definitions.

See also arctan, arctan2, and other inverse trigonometric functions.