试题与答案

如图2.5.15所示,PA切⊙0于A,PC交⊙O于点B、C,则PC的长是.()(1)

题型:填空题

题目:

如图2.5.15所示,PA切⊙0于A,PC交⊙O于点B、C,则PC的长是.()

(1)若PA=5,PB=BC;

(2)若PA=5,

答案:

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