Решение:
Угол:
γ° = 180 - α° - β°
= 180 - 25° - 25°
= 130°
Сторона:
a = c·
= 12000·
= 12000·
= 12000·0.5517
= 6620.4
Сторона:
b = c·
= 12000·
= 12000·
= 12000·0.5517
= 6620.4
Периметр:
P = a + b + c
= 6620.4 + 6620.4 + 12000
= 25240.8
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√12620.4·(12620.4-6620.4)·(12620.4-6620.4)·(12620.4-12000)
=√12620.4 · 6000 · 6000 · 620.4
=√2.8186906176E+14
= 16788957
Высота :
ha =
=
= 5071.9
hb =
=
= 5071.9
hc =
=
= 2798.2