MATLAB Function Reference

atan - Inverse tangent; result in radians

Syntax

Y = atan(X)

Description

Y = atan(X) returns the inverse tangent (arctangent) for each element of X. For real elements of X, atan(X) is in the range .

The atan function operates element-wise on arrays. The function's domains and ranges include complex values. All angles are in radians.

Examples

Graph the inverse tangent function over the domain .

x = -20:0.01:20; 
plot(x,atan(x)), grid on

Definition

The inverse tangent can be defined as

Algorithm