Дано: |a|=2; |b|=1; градус=60° Знайти
1) (a+b)•a;
2) |a+b|
3)cos(a;a+b) |a+b|=√(a2+b)²

Question

Математика: Дано: |a|=2; |b|=1; градус=60° Знайти 1) (a+b)•a; 2) |a+b| 3)cos(a;a+b) |a+b|=√(a2+b)²

gaifuling4owmrcy · Answer

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