Решение:
Угол:
α° = arcsin(
sin(γ°))
= arcsin(
sin(23°))
= arcsin(0.4776·0.3907)
= 10.75°
Угол:
β° = 180 - γ° - α°
= 180 - 23° - 10.75°
= 146.25°
Сторона:
b = √a2 + c2 - 2ac·cos(β°)
= √322 + 672 - 2·32·67·cos(146.25°)
= √1024 + 4489 - 4288·-0.8315
= √9078.5
= 95.28
или:
b = a·
= 32·
= 32·
= 32·2.979
= 95.33
или:
b = c·
= 67·
= 67·
= 67·1.422
= 95.27
Высота :
hc = a·sin(β°)
= 32·sin(146.25°)
= 32·0.5556
= 17.78
Периметр:
P = a + b + c
= 32 + 95.27 + 67
= 194.27
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√97.14·(97.14-32)·(97.14-95.27)·(97.14-67)
=√97.14 · 65.14 · 1.87 · 30.14
=√356640.53931528
= 597.19
hb =
=
= 12.54