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Toán 9-10-11-12: Trong không gian Oxyz,cho mặt cầu (S):(x-1)^2+(y-2)^2+(z-3)^2=14/3 và đường thẳng
4 months ago
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Trong không gian Oxyz,cho mặt cầu (S):(x-1)^2+(y-2)^2+(z-3)^2=14/3
và đường thẳng d:(x-4)/3=(y-4)/2=(z-4)/1
Gọi A(a;b;c) là điểm thuộc d và từ A kẻ 3 tiếp tuyến đến mặt cầu
Gọi B,C,D là 3 tiếp điểm thỏa mãn tứ diện ABCD đều.Tính T=a+b+c
#ToanLop12
#ToanLop11
#ToanLop10
#ToanLop9
#HinhHocKhongGianOxyz
#OxyzGeometry
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