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2 năm trước
Mọi người giải giúp mình với ạ!! Trả lời cho 5⭐luôn. Cảm ơn nhiều ❤ Đề: Cho đường tròn (O;R). Qua điểm A thuộc đường tròn, kẻ tiếp tuyến Ax, trên đó lấy điểm B sao cho LaTeX: OB=\sqrt{2}RO B = 2 R. OB cắt đường tròn (O) ở C. Tính số đo của cung nhỏ AC??? Tải lên
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