如图,已知圆锥的体积为
,底面半径
与
的夹角
,且
;
是母线
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/9716a2d4-289b-46ad-8dd9-0de6765c90fa.png?resizew=145)
(1)求圆锥的表面积;
(2)求异面直线
与
所成角的大小(结果用反三角函数表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a4c11d41372175ba3541a44c3376b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f16e77b039842ae40a4b04c527655a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b5e290c6b2c5508a3bf6117afbf7e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/9716a2d4-289b-46ad-8dd9-0de6765c90fa.png?resizew=145)
(1)求圆锥的表面积;
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
更新时间:2021-05-05 09:28:02
|
相似题推荐
【推荐1】如图,已知圆锥的底面半径
,经过旋转轴
的截面是等边三角形
,点
为半圆弧
的中点,点
为母线
的中点.
(1)求此圆锥的表面积和体积;
(2)求异面直线
与
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8176754726d2194c890e80df1a1f1c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/12/84bc768b-bedf-4181-8965-178b14857a91.png?resizew=185)
(1)求此圆锥的表面积和体积;
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】如图,已知
是圆锥
的底面直径,
是底面圆心,
,
,
是母线
的中点,
是底面圆周上一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/85440158-aaf9-433e-b268-ba45df43dcc1.png?resizew=136)
(1)求圆锥的侧面积;
(2)求直线
与底面所成的角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb3a4a1f748251e3a5232aec3f40e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed05ceb3130f1dd3d2ffcb2fb6231f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/85440158-aaf9-433e-b268-ba45df43dcc1.png?resizew=136)
(1)求圆锥的侧面积;
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】在矩形
中,将
沿其对角线
折起来得到
,且平面
平面
(如图所示).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/0fb2fbd9-63a0-49d8-8252-825e747f3632.png?resizew=307)
(1)证明:
平面
;
(2)若
,
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c510b85dfbca0e3ab0744655d77e8c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fe22d526d1da4d61436c59e7517328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/0fb2fbd9-63a0-49d8-8252-825e747f3632.png?resizew=307)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4560fa4ad459b58b723c74bd24e51ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62fd0b510920be6bc60d170c3ff3da3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ecc884f5b4dc9622e90e1303bc481f5.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
解题方法
【推荐2】在四棱锥
中,四边形
是直角梯形,
,
,
,
,
分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/2021/7/19/2767610192371712/2775384012046336/STEM/f1d7334bde7941938615ab7d547b66d7.png?resizew=236)
(1)求证:
平面
;
(2)若
平面
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4129b876f9ea0c088602a654bc26cb77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5acb763021bf166ca719d07223591d9.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2021/7/19/2767610192371712/2775384012046336/STEM/f1d7334bde7941938615ab7d547b66d7.png?resizew=236)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c0089d8eb23cb703c5278aff214cd2.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
解题方法
【推荐1】如图所示,在正方体
中,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/2a1a73ac-b92a-4ad3-a1a5-75c8410b8d73.png?resizew=144)
(1)求异面直线
与
所成的角的大小;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3355e2fa0ac6c675f02ee36c3ced4f2d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/2a1a73ac-b92a-4ad3-a1a5-75c8410b8d73.png?resizew=144)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8395ad704eb0d1e66f7c2e1558de34ad.png)
您最近一年使用:0次
【推荐2】如图,在正方体
中
![](https://img.xkw.com/dksih/QBM/2021/5/14/2720927771041792/2770666442833920/STEM/3e090a0b6765454f8caccc68b67bf1bc.png?resizew=222)
(1)求异面直线
与
所成角的大小;
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0e00113872f921116b6c0c3177d0f.png)
(3)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2021/5/14/2720927771041792/2770666442833920/STEM/3e090a0b6765454f8caccc68b67bf1bc.png?resizew=222)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0e00113872f921116b6c0c3177d0f.png)
(3)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157770e4c9689b87ed922229e1682d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf9628142422a4884bd59538da6d312.png)
您最近一年使用:0次