BD² = AB² - AD² = 17² - 8² = 289 - 64 = 225
BD = 15
DC² = AC² - AD² = 10² - 8² = 100 - 64 = 36
DC = 6
BC = BD + DC = 15 + 6 = 21
cos CAD = AD/AC = 8/10 = 0.8
уг.CAD = arccos(0.8) ≈ 37°
ответ: BD = 15см, BC = 21см, уг.CAD = arccos(0.8) ≈ 37°
BD² = AB² - AD² = 17² - 8² = 289 - 64 = 225
BD = 15
DC² = AC² - AD² = 10² - 8² = 100 - 64 = 36
DC = 6
BC = BD + DC = 15 + 6 = 21
cos CAD = AD/AC = 8/10 = 0.8
уг.CAD = arccos(0.8) ≈ 37°
ответ: BD = 15см, BC = 21см, уг.CAD = arccos(0.8) ≈ 37°