Предмет: Математика, автор: shcudlon

Вища математика,допоможіть!!
Дані координати вершин піраміди А1(-1;3;0), А2(2;0;0), А3(5;-2;1), А4(3;2;7).
Треба знайти:
а )кут між ребрами А1А2 та А1А4; б) рівняння прямої А1А2; в) рівняння та площу грані
А1А2А3; д) об’єм піраміди А1А2А3А4.
20 балів:)

Ответы

Автор ответа: dnepr1
0

Решение дано во вложении.

К пункту д) ответ дан в двух вариантах для выбора.

Приложения:
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