Mathematics
Senior High
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請問這題怎麼算
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單元7 圓與直線的關係
11. 已知自圓C: (x-1)+(y-2)=4外一點P(3,4)作C的兩條切線,切點為A,B,求△PAB
的外接圓方程式。
Ans: (x-2)²+(J-3)² = 2
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