Решение:
Угол:
α° = arccos(
)
= arccos(
)
= arccos(
)
= 7.645°
Периметр:
P = a + b + c
= 0.8 + 6 + 6
= 12.8
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√6.4·(6.4-0.8)·(6.4-6)·(6.4-6)
=√6.4 · 5.6 · 0.4 · 0.4
=√5.7344
= 2.395
Высота :
ha =
=
= 5.988
hb =
=
= 0.7983
hc =
=
= 0.7983
Угол:
β° = arcsin(
sin(α°))
= arcsin(
sin(7.645°))
= arcsin(7.5·0.133)
= 85.95°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(7.645°))
= arcsin(7.5·0.133)
= 85.95°