inverse tangent(n = noun.linkdef) arc tangent, arctan, arctangent - the inverse function of the tangent; the angle that has a tangent equal to a given number;
is a kind of circular function, trigonometric function

additive inverse, arc tangent, inverse, inverse cosecant, inverse cosine, inverse cotangent, inverse function, inverse secant, inverse sine, multiplicative inverse, tangent, tangent plane, tangent spoke, tangent wheel