已知正四面体的棱长为2.
(1)求顶点到底面的距离;
(2)求侧棱与底面所成角的正弦值;
(3)求侧面与底面所成二面角的平面角为锐角时的余弦值.
(1)求顶点到底面的距离;
(2)求侧棱与底面所成角的正弦值;
(3)求侧面与底面所成二面角的平面角为锐角时的余弦值.
21-22高二·全国·课后作业 查看更多[2]
更新时间:2022-03-08 19:32:28
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【推荐2】如图所示的多面体中,
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解题方法
【推荐2】如图,在直三棱柱
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【推荐3】如图,在三棱锥
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