Решение:
Сторона:
b = √a2 + c2 - 2ac·cos(β°)
= √6002 + 52 - 2·600·5·cos(93°)
= √360000 + 25 - 6000·-0.05234
= √360339
= 600.28
Высота :
hc = a·sin(β°)
= 600·sin(93°)
= 600·0.9986
= 599.16
Угол:
α° = arcsin(
sin(β°))
= arcsin(
sin(93°))
= arcsin(0.9995·0.9986)
= 86.47°
или:
α° = arccos(
)
= arccos(
600.282+52-6002
2·600.28·5
)
= arccos(
360336.0784+25-360000
6002.8
)
= 86.55°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(93°))
= arcsin(0.008329·0.9986)
= 0.4766°
Периметр:
P = a + b + c
= 600 + 600.28 + 5
= 1205.3
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√602.64·(602.64-600)·(602.64-600.28)·(602.64-5)
=√602.64 · 2.64 · 2.36 · 597.64
=√2243951.8893158
= 1498
Высота :
ha =
=
= 4.993
hb =
=
= 4.991