Решение:
Угол:
γ° = 180 - α° - β°
= 180 - 10° - 10°
= 160°
Сторона:
a = c·
= 10·
= 10·
= 10·0.5076
= 5.076
Сторона:
b = c·
= 10·
= 10·
= 10·0.5076
= 5.076
Периметр:
P = a + b + c
= 5.076 + 5.076 + 10
= 20.15
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√10.08·(10.08-5.076)·(10.08-5.076)·(10.08-10)
=√10.08 · 5.004 · 5.004 · 0.08
=√20.1922689024
= 4.494
Высота :
ha =
=
= 1.771
hb =
=
= 1.771
hc =
=
= 0.8988