Решение:
Угол:
γ° = 180 - α° - β°
= 180 - 28.42° - 50°
= 101.58°
Сторона:
a = c·
= 305·
= 305·
= 305·0.4858
= 148.17
Сторона:
b = c·
= 305·
= 305·
= 305·0.782
= 238.51
Периметр:
P = a + b + c
= 148.17 + 238.51 + 305
= 691.68
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√345.84·(345.84-148.17)·(345.84-238.51)·(345.84-305)
=√345.84 · 197.67 · 107.33 · 40.84
=√299655910.01767
= 17310.6
Высота :
ha =
=
= 233.66
hb =
=
= 145.16
hc =
=
= 113.51