In mathematics, the inverse trigonometric functions (occasionally also called antitrigonometric, [1] cyclometric, [2] or arcus functions [3]) are the inverse functions of the trigonometric functions, …

Inverse tangent calculator.Enter the tangent value, select degrees (°) or radians (rad) and press the = button.

Online arctangent calculation tool to compute the arcus tangens function in degrees or radians. Supports input of decimal numbers (0.5, 6, -1, etc.) and fractions (1/3, 3/4, 1/6, -4/3 etc.).

While we can find the value for arctangent for any x value in the interval [-∞, ∞], there are certain angles that are used frequently in trigonometry (0°, 30°, 45°, 60°, 90°, and their multiples and …

Use arctan when you know the tangent of an angle and want to know the actual angle. In the above figure, click on 'reset'. We know the side lengths but need to find the measure of angle …

Jul 23, 2025 · Arctan is defined as the inverse of the tangent function. Arctan (x) is denoted as tan-1(x). There are six trigonometric functions and the inverse of all six functions is repressed …

Arctangent What is the arctangent? In trigonometry, the arctangent is the inverse of the tangent function. It's often written as arctg, arctan, tg -1, or tan -1. $$ y = arctan \ x $$ Here, x …

Nov 14, 2025 · Learn the arctangent and arccotangent functions, their properties, formulas, and key identities with clear explanations.

Use this arctan calculator to quickly find the inverse tangent. Whether you're looking for a simple answer to the question "what is an arctan?" or are curious about the integral or derivative of …

The principal value of the inverse tangent is implemented as ArcTan [z] in the Wolfram Language. In the GNU C library, it is implemented as atan (double x). The inverse tangent is a …