Arcus Tangent Calculator

Calculates the inverse tangent function, often denoted as arctan or $\tan^{-1}$. Users input a numerical value, which represents the ratio of opposite to adjacent sides in a right-angled triangle. The tool then determines the angle whose tangent is equal to the given ratio. This calculation provides the principal value of the angle measured in radians or degrees, depending on the selected output mode. Students and professionals studying trigonometry use this calculator to quickly find specific angles when only the side ratios are known. It aids in solving complex trigonometric equations and verifying values derived from other mathematical contexts. Anyone needing a reliable method to compute an inverse tangent value without manual calculation can utilize its straightforward interface.