Asked by Lara Lynch

In trigonometry, arctan is the inverse of the tangent function and is used to compute the angle measure from the tangent ratio (tan = opposite/adjacent) of a right triangle. Arctan can be calculated in terms of degrees and as well as radians. $large arctan (x)=2arctan left ( **frac{x}{1sqrt{1^{2**}}} right )$

Michaela Harris, BA Contributor