如图,已知三棱锥
的所有棱长均相等,点
满足
,点
在棱
上运动,设
与平面
所成角为
,则
的最大值为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5349821a647c5bd2e447cd4c5d22add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
![](https://img.xkw.com/dksih/QBM/2022/1/9/2890852466712576/2893508583063552/STEM/bb170e96760a4c97bb3c471cf5deb43e.png?resizew=152)
2022高三·全国·专题练习 查看更多[1]
(已下线)第31讲 立体几何中的最大角和最小角定理-2022年新高考数学二轮专题突破精练
更新时间:2022-01-13 12:01:11
|
【知识点】 求线面角
相似题推荐
填空题-单空题
|
适中
(0.65)
名校
【推荐1】如图,已知六棱锥
的底面是正六边形,
平面
,
,给出下列结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/6bdf2b1f-6b1a-4156-86df-781cb99b70c1.png?resizew=177)
①
;
②直线
平面
;
③平面
平面
;
④异面直线
与
所成角为
;
⑤直线
与平面
所成角的余弦值为
.
其中正确的有_______ (把所有正确的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b7838a53d0b3ed4565fb6a890f365d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9801cabc43c024b9c5fac34b7db5d69b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/6bdf2b1f-6b1a-4156-86df-781cb99b70c1.png?resizew=177)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaef9e92d148afff22761d5e027d3ee.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6c2dad46a9052a4185a4f7b4ae8a2e.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d96357a07048ba79b8c84097d359d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
④异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
⑤直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6265f5256804ccaff618cf8c0675eb8e.png)
其中正确的有
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填空题-单空题
|
适中
(0.65)
【推荐2】如图,空间四边形
的各边长均相等,
,
,平面
平面
,给出下列四个结论:
①
;
②异面直线
与
所成的角为
;
③
为等边三角形;
④
与平面
所成的角为
.
其中正确结论的序号是________ .(请将正确结论的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfaad4c4467e27421876d8f2a4371d2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
②异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
其中正确结论的序号是
![](https://img.xkw.com/dksih/QBM/2022/4/30/2969197614391296/2971664993722368/STEM/e350ee4311294414ad62723757ba9533.png?resizew=208)
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