I need to do a project for precalc and it has to involve something we have learned, but also teach the class a little something. I have no idea what to do. I was thinking something involving the sine or cosine graphs? my teacher recomended doing something involving graphing the data about the tides in san diego using a cosine graph but to be honest i have no idea how to make that happen! if anyone has any ideas for my project please help me out!!