Arctan(x) Calculator
Enter any real number to find the corresponding angle in degrees or radians using the inverse tangent function.
θ = arctan(x) or θ = tan⁻¹(x)
arctan(1) = 45°
What is arctan?
Arctan (or inverse tangent) is the inverse function of the tangent. It is used to find the angle whose tangent is a given number.
What is the range of arctan?
The standard range of the arctan function is from -90° to 90° (or -π/2 to π/2 radians), but excluding the exact endpoints where tangent is infinite.
Can arctan take any input?
Yes. Unlike arcsin and arccos which are limited to [-1, 1], the arctan function accepts any real number as an input.
🔗 Related Calculators
📐 Formula
θ = arctan(x) or θ = tan⁻¹(x)
📝 Example Calculation
arctan(1) = 45°
❓ Frequently Asked Questions
What is arctan?▼
Arctan (or inverse tangent) is the inverse function of the tangent. It is used to find the angle whose tangent is a given number.
What is the range of arctan?▼
The standard range of the arctan function is from -90° to 90° (or -π/2 to π/2 radians), but excluding the exact endpoints where tangent is infinite.
Can arctan take any input?▼
Yes. Unlike arcsin and arccos which are limited to [-1, 1], the arctan function accepts any real number as an input.