In Example 4 in Section 1.3 we arrived at a model for the
Chapter 3, Problem 3.292(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 daylight is increasing in Philadelphia on March 21 and May 21
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer