posted by Taylor on .
While standing at the left corner of the schoolyard in front of her school, Suzie estimates that the front face is 8.9 m wide, and 4.7 m high. From her position, Suzie is 12.0 m from the base of the right exterior wall. She determines that the left and right exterior walls appear to be 39 degrees apart. From her position, what is the angle of elevation, to the nearest degree, to the top of the left exterior wall.
use 8.8^2 = x^2 + 12^2 - 2(12)(x)(cos37)