cos^2 15°-sin^2 15° вычислите - Znanija.Site

cos^2 15°-sin^2 15° вычислите
- Предмет:
  Алгебра
- Автор:
  kirbyhouston
- 5 лет назад

Ответы 2

https://znanija.com/task/31257495 помогите пожалуйста 35 баллов
- Автор:
  eve
- 5 лет назад
- 0
cos²15°-sin²15°=cos30°=√3 /2.
- Автор:
  cyruspacheco
- 5 лет назад
- 0
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