Arctan

Arctangent, the inverse of Tan restricted to .

WikipediaInverse trigonometric functionsArctangentMathWorldInverseTangentWikidataQ2257242nLabarctangentDLMF4.23.ii.p1FungrimAtan✓Fungrim entryWolfram LanguageArcTan!

Arctan(x)the principal value with .

Domain: Elementary functions

Details

Defined for every real x, unlike Arcsin and Arccos.
Odd function: .
Horizontal asymptotes at as .
The two-argument atan2 form is a separate compute-engine function, , rather than an overload of Arctan.

Examples

See also: Tan, Arcsin, Arccos