在四棱锥P-ABCD中,PA⊥平面ABCD,底面ABCD是直角梯形,AD∥BC,PA=根号2,AD=2,AB=BC=1,AB⊥BC(1)若M是PD的中点,求证MC∥平面PAB;(2)求PC与平面PAD所成角的大小
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![在四棱锥P-ABCD中,PA⊥平面ABCD,底面ABCD是直角梯形,AD∥BC,PA=根号2,AD=2,AB=BC=1,AB⊥BC(1)若M是PD的中点,求证MC∥平面PAB;(2)求PC与平面PAD所成角的大小](/uploads/image/z/7242525-45-5.jpg?t=%E5%9C%A8%E5%9B%9B%E6%A3%B1%E9%94%A5P-ABCD%E4%B8%AD%2CPA%E2%8A%A5%E5%B9%B3%E9%9D%A2ABCD%2C%E5%BA%95%E9%9D%A2ABCD%E6%98%AF%E7%9B%B4%E8%A7%92%E6%A2%AF%E5%BD%A2%2CAD%E2%88%A5BC%2CPA%3D%E6%A0%B9%E5%8F%B72%2CAD%3D2%2CAB%3DBC%3D1%2CAB%E2%8A%A5BC%EF%BC%881%EF%BC%89%E8%8B%A5M%E6%98%AFPD%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E6%B1%82%E8%AF%81MC%E2%88%A5%E5%B9%B3%E9%9D%A2PAB%EF%BC%9B%EF%BC%882%EF%BC%89%E6%B1%82PC%E4%B8%8E%E5%B9%B3%E9%9D%A2PAD%E6%89%80%E6%88%90%E8%A7%92%E7%9A%84%E5%A4%A7%E5%B0%8F)
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