Решение:
Сторона:
a = b·
= 10·
= 10·
= 10·1
= 10
Угол:
γ° = 180 - α° - β°
= 180 - 45° - 45°
= 90°
Сторона:
c = √a2 + b2 - 2ab·cos(γ°)
= √102 + 102 - 2·10·10·cos(90°)
= √100 + 100 - 200·0
= √200
= 14.14
или:
c = a·
= 10·
= 10·
= 10·1.414
= 14.14
или:
c = b·
= 10·
= 10·
= 10·1.414
= 14.14
Высота :
hc = a·sin(β°)
= 10·sin(45°)
= 10·0.7071
= 7.071
Периметр:
P = a + b + c
= 10 + 10 + 14.14
= 34.14
Площадь:
p =
S =√p·(p-a)·(p-b)·(p-c)
=√17.07·(17.07-10)·(17.07-10)·(17.07-14.14)
=√17.07 · 7.07 · 7.07 · 2.93
=√2499.99977199
= 50
Высота :
ha =
=
= 10
hb =
=
= 10