упростите выражение: ctg^2x * sin^2x - cos2x - №6801911

упростите выражение:
ctg^2x * sin^2x - cos2x
- Предмет:
  Математика
- Автор:
  timberritb
- 5 лет назад

Ответы 1

сos^2x/sin^2x *sin^2x-cos2x=cos^2x-cos^2x+sin^2x=sin^2x
- Автор:
  sawyer102
- 5 лет назад
- 0
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