Решение:
Угол:
α° = arccos(
)
= arccos(
)
= arccos(
)
= 36.69°
Периметр:
P = a + b + c
= 36 + 60 + 51.4
= 147.4
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√73.7·(73.7-36)·(73.7-60)·(73.7-51.4)
=√73.7 · 37.7 · 13.7 · 22.3
=√848856.4799
= 921.33
hb =
=
= 30.71
hc =
=
= 35.85
Угол:
β° = arcsin(
sin(α°))
= arcsin(
sin(36.69°))
= arcsin(1.667·0.5975)
= 84.89°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(36.69°))
= arcsin(1.428·0.5975)
= 58.56°