Chapter 13.5, Problem 33E

Solar heating and electric panels should face the sun so that you gain as much sunlight as possible. Fixed panels are mounted at the best winter angle to the horizontal ac- cording to the following formula: $\theta =0.90$

(your latitude in degrees) $+29°$. A homeowner in Ithaca, New York (latitude ${42.44}^{°}$

N) wishes to mount a solar heating panel that is 4.0 ft wide and 8.0 ft long facing south with its 4.0-ft base mounted on a flat roof at the appropriate winter angle. a. Find the height above the roof of the top of the solar panel. b. Find the length of the base of the support if the top of the solar panel is supported by vertical posts.