An aircraft flying at an altitude of 9000ft passes directly over a group of vacationers hiking at 8500 ft. If O is the angle of elevation from the hikers to the aircraft, find the distanced from the group to the aircraft for the given angle (a) 0 = 60°
(b) 0 = 90°
(c) 0 = 130°

(a) The distance d from the group to the aircraft for 0 = 60° is ft
(b) The distance d from the group to the aircraft for 0 = 90° is ft
(c) The distance d from the group to the aircraft for 0 = 130° is ft