Cosine Calculator

Calculate the cosine of a number

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

The domain of the cosine is $$$x\in \mathbb{R}$$$, the range is $$$[-1,1]$$$.

It is an even function.

Related calculator: Inverse Cosine Calculator

If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please write it in the comments below.

Your Input

Find $$$\cos{\left(\frac{\pi}{6} \right)}$$$.


$$$\cos{\left(\frac{\pi}{6} \right)} = \cos{\left(30^{\circ} \right)} = \frac{\sqrt{3}}{2}\approx 0.866025403784439$$$A

For graph, see the graphing calculator.