名校
解题方法
1 . 已知函数
.
(1)化简
;
(2)若
,
是第一象限角,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87bb789a0d3db139ea05bf17299492d.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc0fce4f9073aaa80a10b0dd6e58363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dd0c52aca1675c17b9a019aa7901e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
您最近一年使用:0次
2024-03-23更新
|
529次组卷
|
6卷引用:西藏拉萨市第二高级中学2019-2020学年高二上学期期中考试数学试题
西藏拉萨市第二高级中学2019-2020学年高二上学期期中考试数学试题西藏拉萨第二高级中学2020-2021学年高二(上)期中数学试题(已下线)专题18 变幻莫测的三角恒等变换-备战2022年高考数学一轮复习一网打尽之重点难点突破(已下线)第十章 三角恒等变换(压轴题专练)-单元速记·巧练(苏教版2019必修第二册)江苏省淮安市马坝高级中学2023-2024学年高一下学期第一次质量检测数学试卷(A卷)(已下线)4.2两角和与差的三角函数公式(2)-【帮课堂】(北师大版2019必修第二册)
名校
2 . 如图,在四棱锥P﹣ABCD中,底面ABCD为梯形,DC=3AB=3,AD=3,AB∥CD,CD⊥AD,平面PCD⊥平面ABCD,E为棱PC上的点,且EC=2PE.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bdc1f794-f2ca-4980-a8ec-36d943d66a97.png?resizew=184)
(1)求证:BE∥平面PAD;
(2)若PD=2,二面角P﹣AD﹣C为60°,求平面APB与平面PBC的夹角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bdc1f794-f2ca-4980-a8ec-36d943d66a97.png?resizew=184)
(1)求证:BE∥平面PAD;
(2)若PD=2,二面角P﹣AD﹣C为60°,求平面APB与平面PBC的夹角的余弦值.
您最近一年使用:0次
2024-01-15更新
|
649次组卷
|
2卷引用:西藏拉萨市部分学校2023-2024学年高二上学期期末模拟数学试题(理科)
解题方法
3 . 如图,在四棱锥
中,
,四边形
为菱形,
,
平面
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/ec0b994a-d939-4012-ae82-e07ef3f5bc46.png?resizew=201)
(1)证明:平面
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5a86745bfe1dfe7bc2683811210330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372ac2824553ed0f731093005724e77c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07734d81e60163b9698f7bd820ad232.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/ec0b994a-d939-4012-ae82-e07ef3f5bc46.png?resizew=201)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78eb0e7bd1ab94d6b3a03756bcbb0e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e34194945be714f87c9bc02c808b55.png)
您最近一年使用:0次
解题方法
4 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d70f223c629dc86d00694b00c2f058.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a504db9edcdb6add26ecc72e18359a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0c12b080d33793aebdf417a0cb498b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
.
(1)若
的定义域为
,求实数a的取值范围;
(2)若
在
上单调递增,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6a5e6cb2adc544b8a0c0b32727efa6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940acd97c9f6cdc3b3f9b12babd8032b.png)
您最近一年使用:0次
2024-01-10更新
|
279次组卷
|
6卷引用:西藏山南市2023-2024学年高一上学期期末考试数学试题
6 . 在平面直角坐标系中,曲线
,曲线
的参数方程为
(
为参数),以坐标原点
为极点,
轴的正半轴为极轴建立极坐标系.
(1)求曲线
的极坐标方程;
(2)在极坐标系中,射线
与曲线
分别交于
两点(异于极点
),求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca83a3c2edc7a1d19930fc2dea18b45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9e0d9cb6cb1dd922db49a434e350f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
(2)在极坐标系中,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac93b0b1bc6136c9a64c1fce87a4665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
2024-01-09更新
|
368次组卷
|
4卷引用:西藏林芝市2024届高三一模数学(理)试题
西藏林芝市2024届高三一模数学(理)试题四川省成都市天府新区综合高级中学2024届高三上学期一月考试数学(理)试题四川省成都市天府新区综合高级中学2024届高三上学期一月考试数学(文)试题(已下线)2024年高考数学二轮复习测试卷(全国卷文科专用)
名校
解题方法
7 . 已知等比数列
的前n项和
.
(1)求数列
的通项公式
.
(2)若
为数列
的前
项和,求使
成立的最小正整数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1d09dc354de48bb3db2aba89eff641.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e424d69c14f5f2bcfe97da64b23af3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32d1458a752e25ffed83715897b2afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
8 . 已知直线
,
,圆
,l过定点A,l与圆C相交于点M,N,且________.从①
;②
为等边三角形;③
;这三个条件中任选一个填入题中的横线上,并解答问题.
(1)求k的值;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc050b576fe56d49b7c607198f668975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36b234ba460321e811de1729eadd4b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dea47d61f80f887881dba20902b5a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633c8704e3d917bf5175ae1446328a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd0ca36bd0915844d9a5b25d1b376c8.png)
(1)求k的值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
您最近一年使用:0次
解题方法
9 . 已知等比数列
的公比
,且
.
(1)求
的通项公式;
(2)若
为等差数列,且
,
,求
的前
项利
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdefe767533b3368858d21233e65bf59.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55465a4e2f66f59176600a89b283b67d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4158d79faf101bd42dacd31d4a5eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
10 . 如图,在四棱台
中,底面
是菱形,
,
,
平面
.
(1)证明:
.
(2)棱
上是否存在一点E,使得二面角
的余弦值为
?若存在,求线段
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50cb59da6e7882e4328b766777ee15d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/3a816394-77b8-4c6f-ae62-e3e25149cbbb.png?resizew=204)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a382ccd078374f1efebb26a43599e596.png)
(2)棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ad0edb590fa1cc97383714f87cbda6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af46237d7279ffb682d57e4e7b57a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
2023-12-28更新
|
593次组卷
|
4卷引用:高二数学开学摸底考01(新高考地区)-2023-2024学年高中下学期开学摸底考试卷
(已下线)高二数学开学摸底考01(新高考地区)-2023-2024学年高中下学期开学摸底考试卷江西省“三新”协同教研共同体2023-2024学年高二上学期12月联考数学试卷 辽宁省辽阳市2023-2024学年高二上学期1月期末考试数学试卷(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 立体几何非常规建系问题 微点3 立体几何非常规建系问题(三)【培优版】