如图,AB是圆O的直径,PA垂直于圆O所在的平面,C是圆周异于A,B的任意一点,求证(1)BC⊥平面PAC.(2)平面PAC⊥平面PBC
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![如图,AB是圆O的直径,PA垂直于圆O所在的平面,C是圆周异于A,B的任意一点,求证(1)BC⊥平面PAC.(2)平面PAC⊥平面PBC](/uploads/image/z/7857094-22-4.jpg?t=%E5%A6%82%E5%9B%BE%2CAB%E6%98%AF%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%2CPA%E5%9E%82%E7%9B%B4%E4%BA%8E%E5%9C%86O%E6%89%80%E5%9C%A8%E7%9A%84%E5%B9%B3%E9%9D%A2%2CC%E6%98%AF%E5%9C%86%E5%91%A8%E5%BC%82%E4%BA%8EA%2CB%E7%9A%84%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9%2C%E6%B1%82%E8%AF%81%EF%BC%881%29BC%E2%8A%A5%E5%B9%B3%E9%9D%A2PAC.%EF%BC%882%EF%BC%89%E5%B9%B3%E9%9D%A2PAC%E2%8A%A5%E5%B9%B3%E9%9D%A2PBC)
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