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namhai7779
2 năm trước
Cho hình lăng trụ đứng ABC. A'B'C' có đáy là tam giác vuông và AB=BC=a, AA' = a√2 , M là trung điểm của BC. Tính khoảng cách d của hai đường thẳng AM và B'C. Ai giải hộ em theo phương pháp tọa độ với ạ
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