atan()

Returns the inverse tangent, or arc tangent, in radians

Syntax
y = atan(x)

Arguments

Name	Description	Range	Type	Required
x	number	(-∞, ∞)	integer, real, complex	yes

Examples

a = atan(-1)
returns −0.785

Defined in

Built in

See Also

acos(), asin(), atan2()

Notes/Equations

Returned value range is -pi/2 to pi/2.