Решение:
Угол:
α° = arccos(
)
= arccos(
22+2.2362-2.2362
2·2·2.236
)
= arccos(
)
= 63.43°
Периметр:
P = a + b + c
= 2.236 + 2 + 2.236
= 6.472
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√3.236·(3.236-2.236)·(3.236-2)·(3.236-2.236)
=√3.236 · 1 · 1.236 · 1
=√3.999696
= 2
Высота :
ha =
=
= 1.789
hb =
=
= 2
hc =
=
= 1.789
Угол:
β° = arcsin(
sin(α°))
= arcsin(
sin(63.43°))
= arcsin(0.8945·0.8944)
= 53.13°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(63.43°))
= arcsin(1·0.8944)
= 63.43°