21. A tourist views a deer from a height of 45 feet. The horizontal distance between the tourist and the deer is 130 feet. At what angle (x) should the tourist hold his camera to photograph the deer? Round your answer to the nearest degree.
A. 19 degrees
B. 45 degrees
C. 71 degrees
D. 138 degrees

22. A hawk sitting on a tree branch spots a mouse on the ground 15 feet from the base of the tree. The hawk swoops down toward the mouse at an angle of 30 degrees. What is the distance from the tree branch to the mouse?
A. 7.5 ft
B. 15 ft
C. 26 ft
D. 30 ft

23. You need a ladder that will reach up a 25 foot tall house when placed 10 feet away from the house. How tall does the ladder need to be?
A. 25 ft
B. 26 ft
C. 27 ft
D. 28 ft

24. From a point 340 meters from the base of the Hoover Dam, the angle of elevation to the top of the dam is 33°. Find the height of the dam to the nearest meter.
A. 185.18 m
B. 220.80 m
C. 523.55 m
D. 624.27 m​