Решение:
Сторона:
b = √a2 + c2 - 2ac·cos(β°)
= √242 + 242 - 2·24·24·cos(150°)
= √576 + 576 - 1152·-0.866
= √2149.6
= 46.36
Высота :
hc = a·sin(β°)
= 24·sin(150°)
= 24·0.5
= 12
Угол:
α° = arcsin(
sin(β°))
= arcsin(
sin(150°))
= arcsin(0.5177·0.5)
= 15°
или:
α° = arccos(
)
= arccos(
)
= arccos(
)
= 15.02°
Угол:
γ° = arcsin(
sin(α°))
= arcsin(
sin(150°))
= arcsin(0.5177·0.5)
= 15°
Периметр:
P = a + b + c
= 24 + 46.36 + 24
= 94.36
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√47.18·(47.18-24)·(47.18-46.36)·(47.18-24)
=√47.18 · 23.18 · 0.82 · 23.18
=√20787.32720624
= 144.18
Высота :
ha =
=
= 12.02
hb =
=
= 6.22