1. {a} (2 points} I am 5 inches tall. At a certain time of dag\"r I notice that my shadow cast by the sun is about 3'9 inches long. What is the angle of elevation of the sun1 to the nearest degree? {b} {2 points} At the same time of day, the sun casts a shadow on a tree that is about 22 feet long. To the nearest foot, approximatelyr how tall is the tree? 2. {4 points} The picture shows a midair refueling scenario that military aircraft often use. Assume the elevation angle that the hose makes with the plane heing refueled is H = 39'\". If the hose is 151?} feet long~ what should the altitude difference a be between the two planes? 3. (4 points} Simplify the following expression, oarefullg.r considering the order of oper ations and showing steps: Singif} + 005211?) tans} - mam