Math.atan()

Math.atan(x) → number

Returns the arctangent of x.

Returns the angle, in radians, whose tangent is x. The result is in the range -π/2 to π/2.

Arguments

NameTypeRequiredDefaultDescription
x number optional — A number.

Returns

number The arctangent of x, in radians.

Example

let a = Math.atan(1); // 0.7853981633974483