Arccos is the official game tracker of the PGA TOUR. Arccos automatically tracks your shots on the course and provides personal insights about your game so you make better decisions and improve …

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, 0 ≤ x ≤ π. …

For a circle of radius 1, arcsin and arccos are the lengths of actual arcs determined by the quantities in question. Several notations for the inverse trigonometric functions exist.

arccos (x), inverse cosine function. Definition, rules, graph and table.

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 arccosine (or arccos).

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

Arccos (Inverse Cosine) Calculator - Calculate the angle (in degrees or radians) whose cosine equals a given value. Includes principal value range (0° to 180° / 0 to π) and general solutions.

Jul 23, 2025 · The inverse of the cosine function, the arccosine function (arccos or cos⁻¹), returns the angle whose cosine is a given value. Its definition spans values from -1 to 1, and its output is 0 to π …

Use this arccos calculator to easily calculate the arccosine of a number. Supports input of either decimal numbers (e.g. 0.5, -0.5) or fractions (e.g. 1/2, -1/2).

If you know the three sides of a triangle, and you'd like to find any of the triangle's angles, you'll need to use arccos: find everything about this law at our law of cosines calculator.