Решение:
Угол:
α° = arccos(
)
= arccos(
)
= arccos(
)
= 60.14°
Периметр:
P = a + b + c
= 6.7 + 7 + 6.32
= 20.02
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√10.01·(10.01-6.7)·(10.01-7)·(10.01-6.32)
=√10.01 · 3.31 · 3.01 · 3.69
=√368.00602839
= 19.18
Высота :
ha =
=
= 5.725
hb =
=
= 5.48
hc =
=
= 6.07
Угол:
β° = arcsin(
sin(α°))
= arcsin(
sin(60.14°))
= arcsin(1.045·0.8672)
= 64.99°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(60.14°))
= arcsin(0.9433·0.8672)
= 54.89°