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    Как найти значение cos 2x, если известно значение cos x?

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    Ответ создан на основе результатов поиска

    Чтобы найти значение cos 2x, если известно значение cos x, можно использовать формулу cos 2x = 2cos²x - 1 34.
    На основе 10 источников:

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      10 источников

      1. uchi.ru
        1
      2. cuemath.com
        2
      3. brighterly.com
        3
      4. igplus2211.medium.com
        4
      5. tr-page.yandex.ru
        5
      6. collegedunia.com
        6
      7. unacademy.com
        7
      8. vedantu.com
        8
      9. banki.ru
        9
      10. testbook.com
        10
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