1 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c732e2293ea4e6376cee96914e7efe.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c732e2293ea4e6376cee96914e7efe.png)
您最近一年使用:0次
名校
2 .
展开式中第三项系数为________ (用具体数字作答).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dba672cb048a271b0ea1e5ec88a0ad6.png)
您最近一年使用:0次
2023-07-27更新
|
476次组卷
|
4卷引用:广东省韶关市2022-2023学年高二下学期期末数学试题
3 . 某次考试准备了A、B、C三份试题,开考前从中随机选择一份作为当场考试试题,试题A和试题B被选上的概率都是0.3,如果试题是A或C,考生甲通过的概率都是0.8.如果试题是B,考生甲通过的概率是0.6,则该场考试考生甲能通过的概率是________ .
您最近一年使用:0次
4 . 三棱锥
中,
平面
,
,
,
,则三棱锥
外接球的体积是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.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/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1371fe98a65d8ebd840c8d98346b6d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
解题方法
5 . 已知向量
的夹角为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d33ee1f52775bf9ba66e0fdf0ecbb35.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536f270ba55f42ae71cd7c2d99c031c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d33ee1f52775bf9ba66e0fdf0ecbb35.png)
您最近一年使用:0次
解题方法
6 . 已知
是角
的终边上一点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b699f0d78a2fb9dec6432376e05da8.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a42451bdbef6c82dbaf8e06f0614794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b699f0d78a2fb9dec6432376e05da8.png)
您最近一年使用:0次
7 . 如图,为了测量河对岸的塔
的高度,某人选取与塔底
在同一水平面内的两个测量基点
与
,现测得
;
,在点
测得塔顶
的仰角为
,则塔高![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
__________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8542a0af4ea891ce6a622afb8193dc00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e374ee3508f0621ce2fac55370aae2a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
您最近一年使用:0次
2023-07-11更新
|
263次组卷
|
2卷引用:广东省韶关市2022-2023学年高一下学期期末数学试题
解题方法
8 . 在棱长为1的正方体
中,
是棱
的中点,
是侧面
上(含边界)的动点,且满足直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a604466a9c8d10d557b3dfc43b547065.png)
平面
,则动点
的轨迹长度为__________ ;当动点
到平面
的距离最大时,则过点
的平面截正方体
所得到的截面面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a604466a9c8d10d557b3dfc43b547065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912d03b664bbf5896427da55c5d4e0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80bbe13f5c674ba211bc31948cc91151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
您最近一年使用:0次
名校
9 . 已知向量
,
,
,若
与
垂直,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99dd6bda30ac201223015ad93fb1c74c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42414eda778efd6d73bb3f1ea354860.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7bcefc2514754ca89884dc1f1502470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697e82d288df5ac7656340301e636646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
您最近一年使用:0次
2022-07-15更新
|
667次组卷
|
5卷引用:广东省韶关市曲江区曲江中学2021-2022学年高一下学期期末复习2数学试题
广东省韶关市曲江区曲江中学2021-2022学年高一下学期期末复习2数学试题新疆维吾尔自治区喀什地区巴楚县2022-2023学年高一下学期7月期末考试数学试题贵州省六盘水市第八中学2022-2023学年高二上学期第一次月考数学试题(已下线)高一下学期期末数学考试模拟卷03-期中期末考点大串讲(已下线)期末专题03 平面向量小题综合-【备战期末必刷真题】
10 . 已知
,
,则
在
的投影向量是__________ (用坐标表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dfd6f3dd4104464298f0d02f869e2b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e587626640f5dc20f7b7e20e30a10d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
您最近一年使用:0次