Mathematics, 04.06.2020 14:07 nicolemillan20

правильной прямоугольной пирамиды боковая грань представляет собой равносторонний треугольник. Найти tgα, если альфа - угол между стороной пирамиды и плоскостью основания. помогите пожалуйста

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правильной прямоугольной пирамиды боковая грань представляет собой равносторонний треугольник. Найти...