如图,已知四棱锥
平面
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1e0d0d5b6512c8299e5b30dd9af6c5.png)
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5871f03ab98cfbd037ef45bb9e390174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa003ffef67888a7821243f1f93f1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1e0d0d5b6512c8299e5b30dd9af6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
21-22高二下·浙江绍兴·期末 查看更多[3]
更新时间:2022-07-09 08:09:57
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相似题推荐
解答题
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(0.85)
名校
【推荐1】如图,四棱锥
中,平面
平面
,且
,底面
为矩形,点
、
、
分别为线段
、
、
的中点,
是
上的一点,
.直线
与平面
所成的角为
.
![](https://img.xkw.com/dksih/QBM/2018/3/8/1897855661211648/1898631294435328/STEM/7720a5b7cf4644c4aa3f2c685b04b14a.png?resizew=183)
(1)证明:
平面
;
(2)设
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e333e21dc1ef975530222e82212910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://img.xkw.com/dksih/QBM/2018/3/8/1897855661211648/1898631294435328/STEM/7720a5b7cf4644c4aa3f2c685b04b14a.png?resizew=183)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8be7470f11eed5536f3baf65e3a125d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efd79a080e97ed7a2c2df36946c649c.png)
您最近一年使用:0次
解答题-证明题
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解题方法
【推荐2】在多面体
中,正方形
和矩形
互相垂直,
、
分别是
和
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/ab46f06d-4bff-42b8-ad5d-1454b3e53eee.png?resizew=180)
(1)求证:
平面
.
(2)试问在
边所在的直线上是否存在一点
,使得
平面
?若存在,求
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eae4c5cfe83c44c72a2d40695d18b2a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/ab46f06d-4bff-42b8-ad5d-1454b3e53eee.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a38e6c6dfde2b19b6b47f35a439a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)试问在
![](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/eb3a99c3ef79e88a8ecbd6824fc7ae7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4add4f2d0dc3b8832581436af6aad41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
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【推荐1】如图,在四棱锥
中,底面ABCD为矩形,
平面ABP,
,E为BC的中点.
(1)证明:平面
平面PAD.
(2)若点A到平面PED的距离为
,求直线PA与平面PCD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da42c5aa51de31a7a9c1cdf94fe48b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/763c5411-73a6-4d36-a6a6-6d777c105ec1.png?resizew=77)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a940f43e94a687339a9b50e0694e2e8f.png)
(2)若点A到平面PED的距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98ee8ce2c56dccae6b63b5a9ca022b8.png)
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【推荐2】如图所示,
是
的直径,
所在的平面,C是圆上一点,且
,
,求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1823a9f8a6e9ff64261bb9ce145c8b17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e1534947edbf652f61480a836f4123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/2020/2/11/2396876570140672/2397521001668608/STEM/75a05f8e7671449788235ea79d5f716a.png?resizew=145)
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【推荐3】如图,在四棱锥
中,底面ABCD为矩形,
,点E为线段PC的中点,且
.
;
(2)求直线PB与平面ADE所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316685631676ce839da7ced55501b2cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951b9f77413d5f062acb300b09de1f6.png)
(2)求直线PB与平面ADE所成角的正弦值.
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【推荐1】如图,在四棱锥
中,底面ABCD为矩形,
,点E为线段PC的中点,且
.
;
(2)求直线PB与平面ADE所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316685631676ce839da7ced55501b2cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951b9f77413d5f062acb300b09de1f6.png)
(2)求直线PB与平面ADE所成角的正弦值.
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【推荐2】如图,已知四棱锥
的底面的菱形,
,点
是
边的中点,
和
交于点O,PO
平面
;
;
(2)
求二面角
的大小.
(3)在(2)的条件下,求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b3e33f9d7cef11698e2961c77b06520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65334978b0519b379910dfc4acf8344.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a381d413fe8f9c8a8de8322f2c616b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d399d731913a563e291b817831a0c678.png)
(3)在(2)的条件下,求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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【推荐1】如图:正方体ABCD - A1B1C1D1中,E、F、G分别是B1B、AB、BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/c0bd10d9-e64e-4a9b-821b-d6a5dcee401d.png?resizew=158)
(1)证明:D₁F⊥平面AEG;
(2)求直线BB₁与平面AEG所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/c0bd10d9-e64e-4a9b-821b-d6a5dcee401d.png?resizew=158)
(1)证明:D₁F⊥平面AEG;
(2)求直线BB₁与平面AEG所成角的正弦值.
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【推荐2】如图,在四棱锥
中,底面ABCD为直角梯形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478f53d1215468925976bfa2101836f2.png)
,
平面ABCD,E是棱PC上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/bbe0904e-7e51-4d77-b3ac-799f61fe0b87.png?resizew=128)
(1)证明:平面
平面
.
(2)若
,F是PB的中点,
,
,求直线DF与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478f53d1215468925976bfa2101836f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/bbe0904e-7e51-4d77-b3ac-799f61fe0b87.png?resizew=128)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be672a43e2e2acb2b0a769e353a77c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ada4b1a1df7f0959222d971f928c392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
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