Atree leans such that it is not perpendicular to the ground. the distance between points a and b is 30 feet, and point a is 20 feet from the center of the bottom of the tree (as shown in the figure). the distance from point a to point c at the top of the tree is 29 ft. the angle of elevation from point a to point c is 47°. to the nearest foot, what is the distance from point b to point c? to the nearest degree, what is the angle of elevation from point b to point c?