we saw in the text’s section 9.1 that it is not only the intensity of the radiation incident on a solar collector that’s important, but the angle of incidence is also critical. energy is lost as the angle increases. the incident angle will change over the day and depend on the date, the location of the collector, and the collector orientation. here a house at 40° north latitude has a roof that faces due south and is elevated to an angle of 26.57° (a 6/12 roof pitch). a solar panel is mounted to the roof. 1. what is the angle of incidence between the sun and the panel at 10 am solar time on october 9th? (remember that suggestion to use the solar resource slides?) 2. on a yearly average, a collector elevated at the latitude angle collects the most energy. how much does the incident angle at 10 am solar time on october 9th change if the roof and panel have the "ideal" tilt of 40°?