Вычислить: cos 2п/4 - sin 15п/4 - №28090487

Вычислить: cos 2п/4 - sin 15п/4
- Предмет:
  Алгебра
- Автор:
  bennylong
- 6 лет назад

Ответы 1

cos2p/4=cosp/2=0; sin15p/4=-sinp/4= $- \frac{ \sqrt{2} }{2}$ ответ: $\frac{ \sqrt{2} }{2}$
- Автор:
  blondiepxms
- 6 лет назад
- 0
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