1. The problem statement, all variables and given/known data A model for the length of daylight (in hours) in Philadelphia on the tth day of the year is given. Use this model to compare how the number of hours of daylight is increasing in Philadelphia on June 5 and June 15. (Round your answers to four decimal places). 2. Relevant equations L(t)=12+2.8sin[(2pi/365)(t-80)] 3. The attempt at a solution i have no clue were to start. or what to do, please help. i tried L(t)=12+2.8sin[(2pi/365)(5-80)]=9.3088 L(t)=12+2.8sin[(2pi/365)(15-80)]= 9.481 it seemed to easy to be right, and of course it was. please help?