MATH 41 Lecture 1: How to graph sine and cosine functions
Document Summary
We will ubicate us into the basis of the unit circle, it means that y=1, being the value of our function in the corresponding pi term, who they will be in the x axis. It is obviously, better to make a zoom to this values. Just will set points in their corresponding places, if sin (0)= 0, we will start there; if sin( /2)= 1, we will put a point there; and the same with the other ones. And we have to unite all drawings, this would be one revolution (a round of the circle); obviously, it will continue forever, but this patron it is that will repeat. Notice that the graph goes ( ) in each point, where is the x axis. It is similar to sin graph but we will start on the top, i mean that in 1 because cos(0)=1, and we will continue set the dots of the respective values according to /2, , etc.
