Решение:
Угол:
α° = arccos(
)
= arccos(
)
= arccos(
)
= 59.06°
Периметр:
P = a + b + c
= 7.26 + 7.68 + 7
= 21.94
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√10.97·(10.97-7.26)·(10.97-7.68)·(10.97-7)
=√10.97 · 3.71 · 3.29 · 3.97
=√531.57793031
= 23.06
Высота :
ha =
=
= 6.353
hb =
=
= 6.005
hc =
=
= 6.589
Угол:
β° = arcsin(
sin(α°))
= arcsin(
sin(59.06°))
= arcsin(1.058·0.8577)
= 65.15°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(59.06°))
= arcsin(0.9642·0.8577)
= 55.79°