1 . 如图,在锐角
中,
,
,
,点
在
边的延长线上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/1f25e0e3-892a-4afc-a1a4-b546dd9928c7.png?resizew=224)
(1)求
;
(2)求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4376af85e07b29051a812ff3fcda61a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4facc5ce70a091a99ca849187e1f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640f058b479299659893cf524ddf6544.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/1f25e0e3-892a-4afc-a1a4-b546dd9928c7.png?resizew=224)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
您最近一年使用:0次
2023-01-05更新
|
1304次组卷
|
9卷引用:北京市第五中学2022-2023学年高二下学期期中考试数学试题
北京市第五中学2022-2023学年高二下学期期中考试数学试题北京市第一六六中学2022-2023学年高二下学期期中诊断数学试题北京市东城区2023届高三上学期期末考试数学试题北京市西城区2023届高三一模数学试题查漏补缺练习(2)(已下线)北京市西城区2022届高三二模数学试题变式题16-21(已下线)6.4.3.2正弦定理(课件+作业)(已下线)第11章:解三角形 重点题型复习-【题型分类归纳】2022-2023学年高一数学同步讲与练(苏教版2019必修第二册)(已下线)专题6.11 解三角形(重难点题型精讲)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)(已下线)专题06 正弦定理、余弦定理及其应用-期中期末考点大串讲(苏教版2019必修第二册)
名校
2 . 如图,四棱锥
的底面
是正方形,
底面
,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/b0ae5cd4-dfac-47a3-8b57-20fa271770f1.png?resizew=160)
(1)若
为线段
上一点,且
,求
的长;
(2)求直线
和
所成角的余弦值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/b0ae5cd4-dfac-47a3-8b57-20fa271770f1.png?resizew=160)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b96cc1e925e4849c8584ba6a61d7477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
3 . 如图,在平行六面体
中,
,
,
,
,
,
,
与
相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/5221e899-1121-4c80-b14a-f8f7d31b4725.png?resizew=260)
(1)求
;
(2)求
;
(3)求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf90bac174f02c4552e56df4d910bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603a63e8e8f9a50d52980bd7e69b7db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea77ee9aae8a89ab14e5cd8481b3747a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/5221e899-1121-4c80-b14a-f8f7d31b4725.png?resizew=260)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8bad16b7cdf8c638cd324f5be5d834f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd2cdf0ac829b0f5c82fc3fe5d12142.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
您最近一年使用:0次
名校
解题方法
4 . 已知函数
,且
.
(1)求a的值;
(2)求函数
的最小正周期及单调递增区间;
(3)若对于任意的
,总有
,直接写出m的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0a18d0eee8f713e61f59a3118fffa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db443b6eb80e23ca69274aa328d427.png)
(1)求a的值;
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a212d2865980701a2f3f7c4aa65f7319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a1f466574610af999d1e7fb30f5d3e.png)
您最近一年使用:0次
2022-10-24更新
|
732次组卷
|
5卷引用:北京市清华大学附属中学2022-2023学年高二上学期10月统练数学试题(1)
名校
解题方法
5 . 将平面直角坐标系中的一列点
.记为
,设
,其中
为与y轴正方向相同的单位向量若对任意的正整数n,都有
,则称
为T点列.
(1)判断点列
是否为T点列,直接写出结果;
(2)求证
是T点列:
(3)若
为T点列,且
.任取其中连续三点
,证明
为钝角三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fa0a4178c2ab8acf3342d228ed8e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f4f7da7655b76971cdf3e11600a9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/869434cabde100f74953780653d3a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88364f251f3d8a14d9784588f45f7acf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e972e658495ad2b603e2b11f3d5e20ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f4f7da7655b76971cdf3e11600a9f3.png)
(1)判断点列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf87e7e5ae1e3d45c2ccd73dd8d29a2.png)
(2)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6ec98836c8c456b45ab94f9aa5a7fb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f4f7da7655b76971cdf3e11600a9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ed0fe3ab3607bcc987be7ba9ae5bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade2b9aa97d71e08923f71c8eba032a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24dc108423b4ca4d3b94e9779089f73.png)
您最近一年使用:0次
名校
6 . 已知函数
.
(1)求
的单调递增区间与最小正周期;
(2)设△ABC为锐角三角形,角A所对边
,角B所对边
,若
,求△ABC的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e73e99865c5111ab55bbd76405d129.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设△ABC为锐角三角形,角A所对边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd48113303a77f9329c00249721b802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66dda9b69b8b7ccf878f2759aca4ef32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8307bb6f4a22abf0720d04d002b87d.png)
您最近一年使用:0次
2022-10-21更新
|
411次组卷
|
2卷引用:北京市第二中学2022-2023学年高二上学期10月学段考试数学试题
7 . 已知函数
.
(1)设
的内角A、B、C所对的边长分别为a、b、c.若
,且
,求c的值;
(2)指出
图像经过怎样的变换就能得到函数
的图像,并求函数
的递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dba1132f13c6cc311f64b3440b537d2.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b35399160e2f0def664cee00a71990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd8c11384de6e399d7cff57f7824b69.png)
(2)指出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325f9e2f7784ebdd64292e805884dfa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
8 . 在
中,角
的对边分别为
.
(1)求
的大小;
(2)再从条件①、条件②、条件③这三个条件选择一个作为已知,使得
存在且唯一确定,求
边上高线的长.
条件①:
;条件②:
;条件③:
.
注:如果选择多个符合要求的条件分别解答,按第一个解答给分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fedcea6177c46fa983743dfcd9d129a5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)再从条件①、条件②、条件③这三个条件选择一个作为已知,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe1fa37e8b316839f72f247cd5ba1c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7f7a27ebc253b6979d9ef422ff4024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2aef9e95aaba7d4e81528e4891eb96.png)
注:如果选择多个符合要求的条件分别解答,按第一个解答给分.
您最近一年使用:0次
2022-09-24更新
|
3152次组卷
|
14卷引用:北京市海淀区清华大学附属中学2022-2023学年高二上学期统练数学试题(二)
北京市海淀区清华大学附属中学2022-2023学年高二上学期统练数学试题(二)北京市西城区2022届高三一模数学试题(已下线)临考押题卷02-2022年高考数学临考押题卷(北京卷)北京市第八十中学2023届高三上学期开学考试数学试题北京中国人民大学附属中学2023届高三10月月考数学试题北京市中关村中学2023届高三上学期10月月考数学试题北京市海淀区中国人民大学附属中学2023届高三上学期10月检测练习(月考)数学试题北京卷专题08解三角形(解答题)北京市通州区2022-2023学年高一下学期期中质量检测数学试题北京市东城区景山学校2024届高三上学期12月月考数学试题山东省威海市乳山市银滩高级中学2022-2023学年高三上学期10月月考数学试题(已下线)第六章 平面向量及其应用 讲核心 02(已下线)高一下学期第一次月考试卷(第9~11章)-【单元测试】2022-2023学年高一数学分层训练AB卷(苏教版2019必修第二册)江苏省苏州市八校2022-2023学年高一下学期综合质量监测(期末联考)数学试题
名校
解题方法
9 . 设函数
,其中向量
,
.
(1)求函数
的最小正周期
(2)
在
上的单调递增区间;
(3)若当
时
的最大值为4,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e7b2150ed88d3ffdec3d142617eacf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea78a694e1321980e289d4c87fa636e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81632adef2f2487473cac65db68fd1f1.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d22f098ebc9f99b5e2bde0cbf952947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7adf348ba4a278a8b0e5cd0c8dbc15f9.png)
(3)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42d351afb08ce079cea6f955c16282c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-09-20更新
|
686次组卷
|
3卷引用:北京市第五十七中学2022-2023学年高二上学期10月月考数学试题
名校
解题方法
10 . 在△ABC中,∠A=90°,点D在BC边上.在平面ABC内,过D作DF⊥BC且DF=AC.
(1)若D为BC的中点,且△CDF的面积等于△ABC的面积,求∠ABC;
(2)若
,且BD=3CD,求cos∠CFB.
(1)若D为BC的中点,且△CDF的面积等于△ABC的面积,求∠ABC;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42ed2e5bd5a0f033e24008697bf4963.png)
您最近一年使用:0次
2022-09-14更新
|
1544次组卷
|
8卷引用:北京市育英学校2021-2022学年高二普通班上学期期末练习数学试题