# Cosine

## Summary

Graph of the cos(x) from 0 to 2 PI. Cosine is a trigonometric function that when given the angle of a right triangle, returns the ratio of its adjacent side over the hypotenuse.

## Function

`Math.cos(x)`

Graph of the cos(x) from 0 to 2 PI. Cosine is a trigonometric function that when given the angle of a right triangle, returns the ratio of its adjacent side over the hypotenuse.

`Math.cos(x)`