arccot
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
arccot
About this calculator
The arccotangent calculator is an online tool that calculates the measure of an angle of a right triangle given the ratio of the adjacent side to the opposite side.
This calculator uses the formula arccot(x) = atan(1/x), where x is the ratio of the adjacent side to the opposite side of the right triangle.
Arccotangent is an inverse function of cotangent, and is used in various areas of mathematics, including trigonometry, geometry, and calculus.
Here you can calculate the arccotangent of a value in degrees, minutes and seconds, or as decimal degrees.
Frequently asked questions
What is arccotangent?
Arccotangent is a mathematical function that calculates the measure of an angle of a right triangle given the ratio of the adjacent side to the opposite side.
When to use the arccotangent calculator?
This calculator is useful in various situations, such as calculating the measure of an angle in a right triangle, or verifying the validity of a mathematical formula that involves arccotangent.
Why is the formula arccot(x) = atan(1/x) true?
The formula arccot(x) = atan(1/x) is true because the arccotangent function is the inverse of the cotangent function, and the atan function is the inverse of the tangent function.
Can I calculate the arccotangent of a negative value?
Yes, it is possible to calculate the arccotangent of a negative value. The arccotangent calculator will be able to handle negative values and calculate the correct angle measure.