Решение:
Угол:
γ° = 180 - α° - β°
= 180 - 40° - 40°
= 100°
Сторона:
a = c·
= 3646·
= 3646·
= 3646·0.6527
= 2379.7
Сторона:
b = c·
= 3646·
= 3646·
= 3646·0.6527
= 2379.7
Периметр:
P = a + b + c
= 2379.7 + 2379.7 + 3646
= 8405.4
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√4202.7·(4202.7-2379.7)·(4202.7-2379.7)·(4202.7-3646)
=√4202.7 · 1823 · 1823 · 556.7
=√7775403730646.6
= 2788441
Высота :
ha =
=
= 2343.5
hb =
=
= 2343.5
hc =
=
= 1529.6