Решение:
Сторона:
c = √a2 + b2 - 2ab·cos(γ°)
= √15102 + 15102 - 2·1510·1510·cos(110°)
= √2280100 + 2280100 - 4560200·-0.342
= √6119788
= 2473.8
Угол:
α° = arcsin(
sin(γ°))
= arcsin(
sin(110°))
= arcsin(0.6104·0.9397)
= 35°
или:
α° = arccos(
)
= arccos(
15102+2473.82-15102
2·1510·2473.8
)
= arccos(
2280100+6119686.44-2280100
7470876
)
= 35°
Угол:
β° = arcsin(
sin(γ°))
= arcsin(
sin(110°))
= arcsin(0.6104·0.9397)
= 35°
Периметр:
P = a + b + c
= 1510 + 1510 + 2473.8
= 5493.8
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√2746.9·(2746.9-1510)·(2746.9-1510)·(2746.9-2473.8)
=√2746.9 · 1236.9 · 1236.9 · 273.1
=√1147714130216
= 1071314
Высота :
ha =
=
= 1419
hb =
=
= 1419
hc =
=
= 866.13