College Algebra & Trigonometry, 2018a

11.4. APPLICATIONS 543
Section 8.2 (cont.)
7. sin θ = 2 √
15
9. sin θ =
cos θ =
√
11
15
√
cos θ = 2 √
7
tan θ = 2 √
11
tan θ =√
3
2
3
7
√
11. sin θ = √ 1
11
13. sin θ =
5 20
cos θ = 2 √
5
tan θ =√
11
3
√
3
15. cos θ =
8
tan θ = 5 √
15
17. sin θ = 7√ 31
40
tan θ = 7√ 31
9
√
19. sin θ = 3
2
√
21. cos θ = 44
7
tan θ = √ 3 tanθ =
√
5
44
Section 8.3
1. Sides: 6, 8, 10 3. Sides: 7, 11.03, 13.06
Angles: 36.9 ◦ , 53.1 ◦ ,90 ◦ Angles: 32.4 ◦ , 57.6 ◦ ,90 ◦
5. Sides: 10, 10.72, 14.66 7. Sides: 16, 25.38, 30
Angles: 43 ◦ ,47 ◦ ,90 ◦ Angles: 32.2 ◦ , 57.8 ◦ ,90 ◦
9. Sides: 8.47, 33.96, 35 11. Sides: √ 11 ≈ 3.32, 7.11, 7.85
Angles: 14 ◦ ,76 ◦ ,90 ◦ Angles: 25 ◦ ,65 ◦ ,90 ◦