在直三棱柱
中,
,二面角
的大小为
,点
到平面
的距离为
,点
到平面
的距离为
,则异面直线
与
所成角的余弦值为_______ .
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21-22高二上·山西朔州·期中 查看更多[3]
山西省怀仁市第一中学2021-2022学年高二上学期期中数学(文)试题(已下线)专题37 合理建系-妙解三类空间角问题-备战2022年高考数学一轮复习一网打尽之重点难点突破(已下线)1.4空间向量的应用C卷
更新时间:2021-11-24 07:04:12
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【推荐1】设△ABC中AC=1,AB=2,∠CAB=60°,
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•
•
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_____ .
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【推荐2】在
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【推荐1】如图,四棱锥S-ABCD的底面为正方形,
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【推荐1】如图,三棱锥
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