1) AB = 10 см, ∠A = 47°. AC = 10 * cos47° ≈ 6.82 см. BC = 10 * sin47° ≈ 7.31 см. ∠B = 90° - 47° = 43°. 2) AC = 9 см, ∠A = 43°. AB = 9 / cos43° ≈ 12.29 см. BC = 9 * tg43° ≈ 8.39 см. ∠B = 90° - 43° = 47°. 3) AB = 8 см, AC = 5 см. BC = √AB² - AC² = √64 - 25 = √39 ≈ 6.24 см. cosA = AC/AB = 5/8, ∠A = arccos(5/8) ≈ 51.32°. ∠B = 90° - 51.32° ≈ 38.68°. 4) AC = 8 см, BC = 5 см. AB = √AC² + BC² = √64 + 25 = √89 ≈ 9.43 см. tgA = BC/AC = 5/8, ∠A = arctg(5/8) ≈ 32.01°. ∠B = 90° - 32.01° ≈ 57.99°.