Решение:
Угол:
γ° = 180 - α° - β°
= 180 - 30° - 105°
= 45°
Сторона:
a = c·
= 22.6·
= 22.6·
= 22.6·0.7071
= 15.98
Сторона:
b = c·
= 22.6·
= 22.6·
= 22.6·1.366
= 30.87
Периметр:
P = a + b + c
= 15.98 + 30.87 + 22.6
= 69.45
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√34.73·(34.73-15.98)·(34.73-30.87)·(34.73-22.6)
=√34.73 · 18.75 · 3.86 · 12.13
=√30489.7708875
= 174.61
Высота :
ha =
=
= 21.85
hb =
=
= 11.31
hc =
=
= 15.45