3 On a standard summer day in upstate New York the temperature outside can be modeled using the sinusoidal equation O t 11cos 71 where represents the number of hours since the peak TU 12 temperature for the day a Sketch a graph of this function on the axes below for one day O degrees F 90 b For 0 t 24 graphically determine all points in time when the outside temperature is equal to 75 degrees Round your answers to the nearest tenth of an hour