在底面为直角梯形的四棱锥P-ABCD中,AD//BC,角ABC=90°,PA⊥平面ABCD,PA=3,AD=2,AB=2根号3,BC=6,求证BD⊥平面PAC
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![在底面为直角梯形的四棱锥P-ABCD中,AD//BC,角ABC=90°,PA⊥平面ABCD,PA=3,AD=2,AB=2根号3,BC=6,求证BD⊥平面PAC](/uploads/image/z/7242532-52-2.jpg?t=%E5%9C%A8%E5%BA%95%E9%9D%A2%E4%B8%BA%E7%9B%B4%E8%A7%92%E6%A2%AF%E5%BD%A2%E7%9A%84%E5%9B%9B%E6%A3%B1%E9%94%A5P-ABCD%E4%B8%AD%2CAD%2F%2FBC%2C%E8%A7%92ABC%3D90%C2%B0%2CPA%E2%8A%A5%E5%B9%B3%E9%9D%A2ABCD%2CPA%3D3%2CAD%3D2%2CAB%3D2%E6%A0%B9%E5%8F%B73%2CBC%3D6%2C%E6%B1%82%E8%AF%81BD%E2%8A%A5%E5%B9%B3%E9%9D%A2PAC)
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