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如图,ABCD为菱形,CEFB为正方形,平面ABCD⊥平面CEFB,CE=1,∠...
如图,ABCD为菱形,CEFB为正方形,平面ABCD⊥平面CEFB,CE=1,∠AED=30°,则异面直线BC与AE所成角的大小为
度.
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