ℎ()=29.7+23.4⋅cos(2π365(−172))h(t)=29.7+23.4⋅cos(2π365(t−172))
This is a function of the maximum solar altitude in degrees on day t of the year.
How can I find the average maximum height in total for June, July and August using integration, given that June 1st is the 152nd day of the year, and August 31st is the 243rd day of the year?