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DeadShot
The length of a day in Philadelphia, Pennsylvania, is given by the sinusoidal function, f(t), which represents the number of hours of daylight t days into the year: f(t)=10+2.8sin((2(pi)/365)t-1.35). How many hours of daylight are there on the 100th day of the year? Round the answer to the nearest tenth.
Plug in 100 in place of t.