when the equation is H(t)= a sin(ct-d)+b using your knowledge of the effects of a b c and d fit a sine or cosine curve (whichever is the easier to model) to your data from part c. hence write a rule for H(t). explain why you chose sine or cosine for your model. show your algebric working out and some of the graohs you generated by informed trail and error to determine the equation of your sine curve. include a graph of your final model for H(t). the high tide average is 1.405 and the low tide average is 0.545.