In exercises 19–24, solve the triangle. round decimal answers to the nearest tenth. (see examples 6 and 7.) 19. 20. 21. 22. 23. b c a 29 63° 38 24. 25. error analysis describe and correct the error in fi nding m∠c. — sin c 6 = — sin 55° 5 sin c = — 6 sin 55° 5 m∠c ≈ 79.4° ✗ c b a 5 6 55° monitoring progress and modeling with mathematics onitoring progress and modeling with mathematics 1. writing what type of triangle would you use the law of sines or the law of cosines to solve? 2. vocabulary what information do you need to use the law of sines? vocabulary and core concept check ocabulary and core concept check c b a 5 12 13 c b a 28 18 13 b