вычислить cos 23 cos 22 - sin 23 sin 22 - №21450585

вычислить cos 23 cos 22 - sin 23 sin 22
- Предмет:
  Математика
- Автор:
  doogieyg20
- 6 лет назад

Ответы 2

Вычисляем по формуле cosacosb-sinasinb Следовательно ответ cos 45
- Автор:
  joannapij4
- 6 лет назад
- 0
cos23cos22-sin23sin22 = cos(23+22) = cos45 = (корень из 2)/2
- Автор:
  kolton7k06
- 6 лет назад
- 0
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