Tangent Calculator

Calculate the tangent of a number

The calculator will find the tangent of the given value in radians or degrees.

The tangent $y=\tan(x)$ is such a function that $y=\frac{\sin(x)}{\cos(x)}$ .

The domain of the tangent is $x \ne \frac{\pi}{2} + \pi n, n \in \mathbb{Z}$ , the range is $(-\infty,\infty)$ .

It is an odd function.

Find $\tan{\left(\frac{\pi}{8} \right)}$ .

$\tan{\left(\frac{\pi}{8} \right)} = \tan{\left(\left(\frac{45}{2}\right)^{\circ} \right)} = -1 + \sqrt{2}\approx 0.414213562373095$ A

For graph, see the graphing calculator.