如图,已知正方体
的棱长为2,点
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/11/3/3101878167298048/3102546275999744/STEM/db616d61291a4c1eb5c839bad4bf930a.png?resizew=167)
(1)求异面直线
与
所成角的大小;
(2)求直线
与平面
所成的角的大小.(结果用反三角函数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/2022/11/3/3101878167298048/3102546275999744/STEM/db616d61291a4c1eb5c839bad4bf930a.png?resizew=167)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becf2941e15d668d93ea6ed980afd0ba.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becf2941e15d668d93ea6ed980afd0ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d0fba11e798168ad2e6d05215cf69b.png)
更新时间:2022-11-04 20:09:28
|
相似题推荐
【推荐1】在长方体
中,
,
,
、
分别是所在棱
、
的中点,点
是棱
上的动点,连接
、
,如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/40d883cf-e55b-419e-8da3-88e940130255.png?resizew=151)
(1)求异面直线
、
所成角的大小(用反三角函数值表示);
(2)求以
、
、
、
为顶点的三棱锥的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f41d364b55d88688cd1f571ed231228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/40d883cf-e55b-419e-8da3-88e940130255.png?resizew=151)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(2)求以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】如图,S是圆锥的顶点,O是底面圆的圆心,AB、CD是底面圆的两条直径,且
,
,
,P为SB的中点.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932702217617408/2933935691915264/STEM/ca6d6808-3c47-4b51-a383-f6a5c883c40a.png?resizew=191)
(1)求异面直线SA与PD所成角的大小(结果用反三角函数值表示);
(2)求点S到平面PCD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6abc4afa1773a49f9338217ca2a4decc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a99044cdedf9e67bffd16a7eeeadf9.png)
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932702217617408/2933935691915264/STEM/ca6d6808-3c47-4b51-a383-f6a5c883c40a.png?resizew=191)
(1)求异面直线SA与PD所成角的大小(结果用反三角函数值表示);
(2)求点S到平面PCD的距离.
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|
适中
(0.65)
名校
【推荐1】已知斜三棱柱
的侧面
与底面
垂直,
,
,
,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/30810d1f-0ee9-451b-8f4e-38459b4426cc.png?resizew=189)
(1)求侧棱
与底面
所成角的大小;
(2)求侧面
与底面
所成二面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccde85940c1d648a6613725b788da79f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91cbafbd47a57b0a24799ca61af682f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/30810d1f-0ee9-451b-8f4e-38459b4426cc.png?resizew=189)
(1)求侧棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
【推荐2】如图,在棱长为2的正方体
中,
是
的中点,
![](https://img.xkw.com/dksih/QBM/2021/4/11/2697654008971264/2824133951291392/STEM/1e030125bdb9447a973fc55b22e196df.png?resizew=254)
(1)求直线
与平面
所成角的余弦值;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/2021/4/11/2697654008971264/2824133951291392/STEM/1e030125bdb9447a973fc55b22e196df.png?resizew=254)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11990928efcd42ebe7a82a5f1105a708.png)
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