19 sin(3π/2 + a) + 91 cos(3π+a), если cos a= -3/2 - №23737911

19 sin(3π/2 + a) + 91 cos(3π+a), если cos a= -3/2
- Предмет:
  Математика
- Автор:
  kanebryan
- 5 лет назад

Ответы 1

-19cos(a)-91cos(a)= -19/1 ×(-3/2)-91/1 × (-3/2)=57/2+273/2=330/2=165
- Автор:
  maribelglid
- 5 лет назад
- 0
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