atan - Inverse tangent; result in radians

Syntax

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 [–π/2, π/2].

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 –20 ≤ x ≤ 20.

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

Definitions

The inverse tangent can be defined as

See Also

atan2 | atand | atanh | tan

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