Solved: In Example 4 in Section 1.3 we arrived at a model for the length of daylight (in
Chapter 3, Problem 3.4.80(choose chapter or problem)
In Example 4 in Section 1.3 we arrived at a model for the length of daylight (in hours) in Philadelphia on the th day of the year: L"t# ! 12 % 2.8 sin+ 2(365 "t # 80#, Use this model to compare how the number of hours of daylightis increasing in Philadelphia on March 21 and May 21.
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