高中简单的几何题, 急,不要用向量AB垂直面BCD,BC垂直CD,AB=BC,AD与面BCD所成角30度,求: AD与面ABC所成角, AC与面ABD所成角长方体ABCD-A1B1C1D1,AB=AD=2,AA1=3,求B1C与面A1BCD1所成角. 请写出步骤,
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![高中简单的几何题, 急,不要用向量AB垂直面BCD,BC垂直CD,AB=BC,AD与面BCD所成角30度,求: AD与面ABC所成角, AC与面ABD所成角长方体ABCD-A1B1C1D1,AB=AD=2,AA1=3,求B1C与面A1BCD1所成角. 请写出步骤,](/uploads/image/z/10292933-29-3.jpg?t=%E9%AB%98%E4%B8%AD%E7%AE%80%E5%8D%95%E7%9A%84%E5%87%A0%E4%BD%95%E9%A2%98%2C+%E6%80%A5%2C%E4%B8%8D%E8%A6%81%E7%94%A8%E5%90%91%E9%87%8FAB%E5%9E%82%E7%9B%B4%E9%9D%A2BCD%2CBC%E5%9E%82%E7%9B%B4CD%2CAB%EF%BC%9DBC%2CAD%E4%B8%8E%E9%9D%A2BCD%E6%89%80%E6%88%90%E8%A7%9230%E5%BA%A6%2C%E6%B1%82%EF%BC%9A+AD%E4%B8%8E%E9%9D%A2ABC%E6%89%80%E6%88%90%E8%A7%92%2C+AC%E4%B8%8E%E9%9D%A2ABD%E6%89%80%E6%88%90%E8%A7%92%E9%95%BF%E6%96%B9%E4%BD%93ABCD%EF%BC%8DA1B1C1D1%2CAB%EF%BC%9DAD%EF%BC%9D2%2CAA1%EF%BC%9D3%2C%E6%B1%82B1C%E4%B8%8E%E9%9D%A2A1BCD1%E6%89%80%E6%88%90%E8%A7%92%EF%BC%8E+++%E8%AF%B7%E5%86%99%E5%87%BA%E6%AD%A5%E9%AA%A4%2C)
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