0.5 and a = 12 17. ZA if a = 5 and b = 7 COSA = %3D 18. ZB if a = 7 and c = 9 19. ZA if b = rand c = V21 20. ZB if a = V2 and b = VF %3D %3D 21. cos B if b = aY3

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Involves the use of a framework called a roof truss sys-
tem. Trusses are constructed at a factory and then delivered to the building site and
lifted onto the tops of the walls. As illustrated in the figure, right triangles play a crit-
ical role in the construction of trusses.
PROBLEM SET 6.4
EXERCISES/PROBLEMS
Use the right triangle shown for Exercises 1-6.
2 Find the following. Round lengths to the nearest hundredth and
angle measures to the nearèst tenth.
7.) tan A if a = 7 and b = 5
8. )sin B if a = 5 and c = 12
9. cos A if b = 7 and ç = 11
13
10. tan B if a = 5 and c = 13
11. cos B if a = b
12. sin A if a = 5 and b = 12
Find the following. Leave answers in fraction form.
1. sin A
13. a if sin A = 0.503 and c = 10
14. b if cos A = 0.7 and c = 12
2. cos A
3. tan A
15. c if tan A = 0.6 and a = 5
TanB = 12 =2.1
4. sin B
16. b if sin B = 0.5 and a = 12
5. cos B
17. ZA if a = 5 and b = 7
COSA
6. tan B
18, ZB if a = 7 and c = 9
Use this figure for Exercises 7-24.
19. ZA if b = rand c = V21
e of
2 20. ZB if a = V2 and b = V3-
21. cos B if b = aV3
22. tan A if c = 3a
23. cif ZB = 70° and b = 0.8 HENCO B-38°
24. b if ZA = 27.3° and c = 5
Transcribed Image Text:Involves the use of a framework called a roof truss sys- tem. Trusses are constructed at a factory and then delivered to the building site and lifted onto the tops of the walls. As illustrated in the figure, right triangles play a crit- ical role in the construction of trusses. PROBLEM SET 6.4 EXERCISES/PROBLEMS Use the right triangle shown for Exercises 1-6. 2 Find the following. Round lengths to the nearest hundredth and angle measures to the nearèst tenth. 7.) tan A if a = 7 and b = 5 8. )sin B if a = 5 and c = 12 9. cos A if b = 7 and ç = 11 13 10. tan B if a = 5 and c = 13 11. cos B if a = b 12. sin A if a = 5 and b = 12 Find the following. Leave answers in fraction form. 1. sin A 13. a if sin A = 0.503 and c = 10 14. b if cos A = 0.7 and c = 12 2. cos A 3. tan A 15. c if tan A = 0.6 and a = 5 TanB = 12 =2.1 4. sin B 16. b if sin B = 0.5 and a = 12 5. cos B 17. ZA if a = 5 and b = 7 COSA 6. tan B 18, ZB if a = 7 and c = 9 Use this figure for Exercises 7-24. 19. ZA if b = rand c = V21 e of 2 20. ZB if a = V2 and b = V3- 21. cos B if b = aV3 22. tan A if c = 3a 23. cif ZB = 70° and b = 0.8 HENCO B-38° 24. b if ZA = 27.3° and c = 5
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