An aerial photographer who photographs real estate properties has determined that the best photo is taken at a height of approximately ft and a distance of ft from the building. What is the angle of depression from the plane to the​ building? A right triangle has a horizontal side, a vertical side of length 440 feet, and a third side rising from left to right of length 878 feet. A building is at the bottom left vertex and an airplane is at the top right vertex. The angle formed by the third side and a dashed horizontal line segment extending to the left from the airplane is labeled theta and "angle of depression." The angle formed by the horizontal side and the third side is labeled "angle of elevation." The angle of depression from the plane to the building is .