Решение:
Угол:
α° = arccos(
)
= arccos(
)
= arccos(
)
= 64.32°
Периметр:
P = a + b + c
= 6 + 6 + 5.2
= 17.2
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√8.6·(8.6-6)·(8.6-6)·(8.6-5.2)
=√8.6 · 2.6 · 2.6 · 3.4
=√197.6624
= 14.06
Высота :
ha =
=
= 4.687
hb =
=
= 4.687
hc =
=
= 5.408
Угол:
β° = arcsin(
sin(α°))
= arcsin(
sin(64.32°))
= arcsin(1·0.9012)
= 64.32°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(64.32°))
= arcsin(0.8667·0.9012)
= 51.36°