How to draw the graph of y = sin x and x in the range of -pi to pi

This lesson shows how to draw the graph of y = sin x and x in the range of -pi to pi. Since the sine function has a period of 2pi which implies that sin (x + 2pi n) = sin x for all
integer n. Note that the sine graph is symmetric with respect to the origin. So, the sine function is odd. That is, sin (-x) = - sin x