вычислить cos74cos29+sin74cos61 - №23792412

вычислить cos74cos29+sin74cos61
- Предмет:
  Математика
- Автор:
  lincolncastaneda
- 5 лет назад

Ответы 1

cos74*cos29+sin74*cos(90-29)=cos74*cos29+sin74*sin29=cos(74-29)=cos45=sqrt(2)/2
- Автор:
  lunaharmon
- 5 лет назад
- 0
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