Решение:
Угол:
γ° = 180 - α° - β°
= 180 - 25° - 25°
= 130°
Сторона:
a = c·
= 9.26·
= 9.26·
= 9.26·0.5517
= 5.109
Сторона:
b = c·
= 9.26·
= 9.26·
= 9.26·0.5517
= 5.109
Периметр:
P = a + b + c
= 5.109 + 5.109 + 9.26
= 19.48
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√9.739·(9.739-5.109)·(9.739-5.109)·(9.739-9.26)
=√9.739 · 4.63 · 4.63 · 0.479
=√100.0027311989
= 10
Высота :
ha =
=
= 3.915
hb =
=
= 3.915
hc =
=
= 2.16