問題詳情
11. 圓方程式：x2+y2-4x-8y+19=0，下列哪一條直線與圓相切：
(A) 7x-4y+2=0
(B) x+y=6
(C) 3x+4y=17
(D) 5x+12y=58
(A) 7x-4y+2=0
(B) x+y=6
(C) 3x+4y=17
(D) 5x+12y=58
參考答案
無參考答案
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