如图⊙O的半径OB垂直于直径AC,M为AO上一点,BM的延长线交⊙O于点N,过点N的切线交CA的延长线于P.
(1)求证:
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(2)若⊙O的半径为
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答案 :
(1)证明见解析;(2)2.
如图,圆
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(1)求证:
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(2)求
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答案 :
(1)证明见解析;(2)24.
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