# Question: in a certain town in alberta the time of sunrise...

###### Question details

In a certain town in Alberta, the time of sunrise for any day can be found using the formula t= -1.79sin(2pi((d-78)/365))+6.3 where t is the time in hours after ,midnight and d is the number of the day in the year.

a) write a suitable window which can be used to display the graph of the function.

b) use the formula to determine, to the nearest minute, when the sun rose on may 7, the 127th of the year.

c) determine on which days of the year the sun rose at 7am.