Даю 50 баллов!модуль вектора a=2 модуль вектора b=3 угол (a;b)=120° Найти a×b вектор - №21639026

Даю 50 баллов!
модуль вектора a=2 модуль вектора b=3 угол (a;b)=120° Найти a×b вектор
- Предмет:
  Геометрия
- Автор:
  brooksnash
- 6 лет назад

Ответы 1

cos (120) =cos(180-60)=-cos(60) =-1/2 ab=|a|*|b|*cos(a;b)=2*3*(-1/2)=-1*3=-3
- Автор:
  jack25
- 6 лет назад
- 0
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