I have no clue how to do this. I am new on this site also. I have 11 assignments to do dealing with this kind of stuff... can anyone help?:confused:

Hi, Could you word your question a little better?

As far as I can see, you probably have a number of sin and cosine fucntions to graph and work out the amplitude and period of.
Do you have an example question that someone here could giv eyou a method to get the correct answer, then you should be able to handle the others.