Welcome to the arccos calculator, a.k.a. the inverse cosine calculator. Thanks to our tool, you can quickly find arccos - which is, surprisingly, the primary use of this calculator.

Arccosine, written as arccos or cos -1 (not to be confused with ), is the inverse cosine function. Both arccos and cos -1 are the same thing. Cosine only has an inverse on a restricted domain, …

Calculate inverse cosine (arccos) values instantly with our free online calculator. Perfect for trigonometry, engineering, and mathematical analysis. Supports degrees and radians.

Jan 24, 2024 · The tool computes θ = arccos (x) as the principal value in radians, then shows degrees as well. It also displays sin (θ) and a clean unit-circle visualization of the radius, …

Arccos calculator to easily calculate the arc cosine (inverse cosine) function of any number. Calculate arccos (x) in degrees and radians with this trigonometric calculator.

Aug 1, 2025 · Calculate Arcsine, Arccosine, Arctangent, Arccotangent, Arcsecant and Arccosecant for values of x and get answers in degrees, ratians and pi. Graphs for inverse …

May 17, 2025 · The inverse cosine function, often represented as arccos (x) arccos(x), is an essential tool in mathematics and many applied sciences. In this article, we have compiled a …

Use the arccos calculator to find the inverse cosine given an angle in radians or degrees, plus learn the formulas and steps to solve.

Definition of the arccos function in trigonometry. The inverse of the cosine function. The angle whose cosine is a given number.

What is Arccosine Formula? In a right triangle, if θ is one of the acute angles, then cos θ = (adjacent)/ (hypotenuse). Then θ = arccos ( (adjacent)/ (hypotenuse). This is the formula of …