Решение:
Угол:
α° = arcsin(
sin(γ°))
= arcsin(
sin(60°))
= arcsin(1.143·0.866)
= 81.82°
Угол:
β° = 180 - γ° - α°
= 180 - 60° - 81.82°
= 38.18°
Сторона:
b = √a2 + c2 - 2ac·cos(β°)
= √162 + 142 - 2·16·14·cos(38.18°)
= √256 + 196 - 448·0.7861
= √99.83
= 9.991
или:
b = a·
= 16·
= 16·
= 16·0.6245
= 9.992
или:
b = c·
= 14·
= 14·
= 14·0.7137
= 9.992
Высота :
hc = a·sin(β°)
= 16·sin(38.18°)
= 16·0.6181
= 9.89
Периметр:
P = a + b + c
= 16 + 9.992 + 14
= 39.99
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√20·(20-16)·(20-9.992)·(20-14)
=√20 · 4 · 10.008 · 6
=√4803.84
= 69.31
Высота :
ha =
=
= 8.664
hb =
=
= 13.87