cos²22.5° - sin²22.5° - №16088275

cos²22.5° - sin²22.5°
- Предмет:
  Математика
- Автор:
  chivasfranklin
- 6 лет назад

Ответы 2

Йо пасиб ))
- Автор:
  alejandraburton
- 6 лет назад
- 0
Cos^x-sin^x=Cos2x
cos^22,5 - sin^22,5 = cos 2*22,5 = 45
cos45= корень из 2 \2
- Автор:
  goldie
- 6 лет назад
- 0
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