Решение:
Угол:
α° = arcsin(
sin(γ°))
= arcsin(
sin(60°))
= arcsin(1.147·0.866)
= 83.36°
или:
α° = arccos(
)
= arccos(
)
= arccos(
)
= 83.39°
Угол:
β° = arcsin(
sin(γ°))
= arcsin(
sin(60°))
= arcsin(0.6881·0.866)
= 36.58°
Периметр:
P = a + b + c
= 5 + 3 + 4.36
= 12.36
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√6.18·(6.18-5)·(6.18-3)·(6.18-4.36)
=√6.18 · 1.18 · 3.18 · 1.82
=√42.20549424
= 6.497
Высота :
ha =
=
= 2.599
hb =
=
= 4.331
hc =
=
= 2.98