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19. From one end of a 6-km straight road, a helicopter is seen hovering directly over the other end at an angle of elevation equal to SU. Find the height of the helicopter from the ground. a. 3.46 km c. 4.24 km b. 7.34km d. 10.39 k 20. The angle of elevation of the top of the building is 50°. If the observer is 90 m from the base of the building, how high is the a. 107.26 m b. 100.32 m building? c. 68.94 m d. 57.85 m 21. To find the missing length below, would you use Law of Sines or Law of Cosines. Find the missing length. Imo of Sinae 1199 2 cm Inwof Cosines 27 cm A Law of Corines 7274 cm

19. From one end of a 6-km straight road, a helicopter is seen hovering directly over the other end at an angle of elevation equal to SU. Find the height of the helicopter from the ground. a. 3.46 km c. 4.24 km b. 7.34km d. 10.39 k 20. The angle of elevation of the top of the building is 50°. If the observer is 90 m from the base of the building, how high is the a. 107.26 m b. 100.32 m building? c. 68.94 m d. 57.85 m 21. To find the missing length below, would you use Law of Sines or Law of Cosines. Find the missing length. Imo of Sinae 1199 2 cm Inwof Cosines 27 cm A Law of Corines 7274 cm

Trigonometry (11th Edition)
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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19. From one end of a 6- km straight road, a helicopter is seen hovering directly over the other end at an angle of elevation equal to 30. Find the height of the helicopter from the ground. a. 3.46 km b. 7.34km c. 4.24 km d. 10.39 k 20. The angle of elevation of the top of the building is 50°. If the observer is 90 m from the base of the building, how high is the building? a. 107.26 m b. 100.32 m c. 68.94 m d. 57.85 m 21. To find the missing length below, would you use Law of Sines or Law of Cosines. Find the missing length. 12. Lowof Cosines 27 cm Imo of Sitat 1199 2 cm d. Law of Sines, 34.6 cm b. Law of Cosines, 727.4 cm
Transcribed Image Text:19. From one end of a 6- km straight road, a helicopter is seen hovering directly over the other end at an angle of elevation equal to 30. Find the height of the helicopter from the ground. a. 3.46 km b. 7.34km c. 4.24 km d. 10.39 k 20. The angle of elevation of the top of the building is 50°. If the observer is 90 m from the base of the building, how high is the building? a. 107.26 m b. 100.32 m c. 68.94 m d. 57.85 m 21. To find the missing length below, would you use Law of Sines or Law of Cosines. Find the missing length. 12. Lowof Cosines 27 cm Imo of Sitat 1199 2 cm d. Law of Sines, 34.6 cm b. Law of Cosines, 727.4 cm
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