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берешь сторону BC за 2y, AC за 2x, тогда DC = y, AM = x, cos(CAD) = 4/x, дальше в треугольнике ADM по теореме косинусов находишь x, дальше в треугольнике ADС по теореме пифагора находишь y ну и ответ будет 8y
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Автор:
jackrabbitqbnl - 1 год назад
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