4. The largest Egyptian pyramid is 146.5 m high. When Rowena stands far away from the pyramid, her line of sight to the top of the pyramid forms an angle of elevation of 20° with the ground. What is the horizontal distance between the center of the pyramid and Rowena? Round to the nearest meter. a. 402 m c 156 m d 65 m b. 427 m
4. The largest Egyptian pyramid is 146.5 m high. When Rowena stands far away from the pyramid, her line of sight to the top of the pyramid forms an angle of elevation of 20° with the ground. What is the horizontal distance between the center of the pyramid and Rowena? Round to the nearest meter. a. 402 m c 156 m d 65 m b. 427 m
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Transcribed Image Text:4. The largest Egyptian pyramid is 146.5 m high. When Rowena stands far away from the pyramid, her line of
sight to the top of the pyramid forms an angle of elevation of 20° with the ground. What is the horizontal
distance between the center of the pyramid and Rowena? Round to the nearest meter.
402 m
c 156 m
d 65 m
a.
b. 427 m
5. An eagle 300 feet in the air spots its prey on the ground. The angle of depression to its prey is 15°. What is the
horizontal distance between the eagle and its prey? Round to the nearest foot.
a. 1,120 ft
b. 1,159 ft
C 310 ft
d 723 ft
6. A pilot flying at an altitude of 1.8 km sights the runway directly in front of her. The angle of depression to the
beginning of the runway is 31°. The angle of depression to the end of the runway is 23°. What is the length of
the runway? Round to the nearest tenth of a kilometer.
a. 1.2 km
b. 0,9 km
c 1.3 km
d. 1.0 km
E3
OI
&
%6
%23
W
m.
b n
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