Решение:
Угол:
α° = 180 - γ° - β°
= 180 - 45° - 40°
= 95°
Высота :
hc = a·sin(β°)
= 35·sin(40°)
= 35·0.6428
= 22.5
Сторона:
b = a·
= 35·
= 35·
= 35·0.6453
= 22.59
Сторона:
c = a·
= 35·
= 35·
= 35·0.7098
= 24.84
Периметр:
P = a + b + c
= 35 + 22.59 + 24.84
= 82.43
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√41.22·(41.22-35)·(41.22-22.59)·(41.22-24.84)
=√41.22 · 6.22 · 18.63 · 16.38
=√78239.33031096
= 279.71
Высота :
ha =
=
= 15.98
hb =
=
= 24.76