3 Steps to Sketch: Graph y=cosx 

Master the 3 Steps to Sketch method while graphing y=cosx.
Step #1: Find the Essentials
Step #2: Plot Key Points
Step #3: Sketch and Repeat!
Use this easy method to graph any basic (unshifted) cosine graph.
For more examples of cosine and other trig graphs, check out this playlist:
• Graphing Cosine: 3 Ste...