This tutorial will show you how to take the information from your printout from the website and put it into T-chart by converting your times for the x-values (raw data) and putting in your high/low tides for the y values.
This tutorial will show you how to use the information from your T-chart to come up with your Cosine equation which models your high/low tides from the place you researched.
This tutorial shows you how to find the max and min values from your Cosine equation by using the TI Nspire.
