Решение:
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(176.25°))
= arcsin(0.9272·0.0654)
= 3.476°
Угол:
β° = 180 - γ° - α°
= 180 - 3.476° - 176.25°
= 0.274°
Сторона:
b = √a2 + c2 - 2ac·cos(β°)
= √68712 + 63712 - 2·6871·6371·cos(0.274°)
= √47210641 + 40589641 - 87550282·1
= √250000
= 500
или:
b = a·
= 6871·
= 6871·
= 6871·0.07312
= 502.41
или:
b = c·
= 6371·
= 6371·
= 6371·0.07887
= 502.48
Высота :
hc = a·sin(β°)
= 6871·sin(0.274°)
= 6871·0.004782
= 32.86
Периметр:
P = a + b + c
= 6871 + 502.48 + 6371
= 13744.5
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√6872.2·(6872.2-6871)·(6872.2-502.48)·(6872.2-6371)
=√6872.2 · 1.1999999999998 · 6369.72 · 501.2
=√26327428415.685
= 162257.3
Высота :
ha =
=
= 47.23
hb =
=
= 645.83