College Algebra & Trigonometry, 2018a

11.4. APPLICATIONS 555
Section 11.2 (cont.)
13. no real solution 15. ∠A =43 ◦ , ∠B ≈ 54.5 ◦ , ∠C ≈ 82.5 ◦
a =31,b=37,c≈ 45.07
∠A =43 ◦ , ∠B ≈ 125.5 ◦ , ∠C ≈ 11.5 ◦
a =31,b=37,c≈ 9.06
17. ∠A ≈ 15.3 ◦ , ∠B ≈ 32.7 ◦ , ∠C = 132 ◦ 19. ∠A ≈ 59.4 ◦ , ∠B =52 ◦ , ∠C ≈ 68.6 ◦
a ≈ 7.81,b=16,c=22
a =≈ 76.46,b=70,c=82.7
∠A ≈ 16.6 ◦ , ∠B =52 ◦ , ∠C ≈ 111.4 ◦
a ≈ 25.38,b=70,c=82.7
Section 11.3
1. ∠A ≈ 52.5 ◦ , ∠B =30 ◦ , ∠C ≈ 97.5 ◦ 3. ∠A ≈ 47.8 ◦ , ∠B ≈ 21.3 ◦ , ∠C ≈ 110.9 ◦
a =24,b≈ 15.13,c=30 a = 122,b=60,c= 154
5. ∠A =52 ◦ , ∠B ≈ 80.3 ◦ , ∠C ≈ 47.7 ◦ 7. ∠A ≈ 17.8 ◦ , ∠B = 135 ◦ , ∠C ≈ 27.2 ◦
a ≈ 28.78,b=36,c=27
a =12,b≈ 27.81,c=18
9. ∠A ≈ 50.3 ◦ , ∠B ≈ 72.3 ◦ , ∠C ≈ 57.4 ◦ 11. ∠A ≈ 38.7 ◦ , ∠B ≈ 53.1 ◦ , ∠C ≈ 88.2 ◦
a =21,b=26,c=23
a =25,b=32,c=40
13. ∠A =77.4 ◦ , ∠B ≈ 55.9 ◦ , ∠C ≈ 46.7 ◦ 15. ∠A ≈ 57.4 ◦ , ∠B ≈ 46.1 ◦ , ∠C ≈ 76.5 ◦
a ≈ 523.15,b= 444,c= 390 a = 112.7,b=96.5,c= 130.2
Section 11.4
1. 23.2 miles 3. 262.9 miles, N43.5 ◦ E
5. 802.9 miles 7. 32.9 miles
9. 3547.1 feet