Решение:
Угол:
α° = arccos(
)
= arccos(
)
= arccos(
)
= 57.97°
Периметр:
P = a + b + c
= 63 + 69 + 60
= 192
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√96·(96-63)·(96-69)·(96-60)
=√96 · 33 · 27 · 36
=√3079296
= 1754.8
Высота :
ha =
=
= 55.71
hb =
=
= 50.86
hc =
=
= 58.49
Угол:
β° = arcsin(
sin(α°))
= arcsin(
sin(57.97°))
= arcsin(1.095·0.8478)
= 68.18°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(57.97°))
= arcsin(0.9524·0.8478)
= 53.85°