1 . 已知
分别为
内角的对边
,
.
(1)若
为
的中点,求
;
(2)若
,判断
的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8242f3a6a00149f6211bfce2dfc5c4ca.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a390d8186b004dd9539aa2af9c27bb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b49530dac385216300ab53ebf82450.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dccced3276dfd512f0047c4b433f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
解题方法
2 . 在
中,内角A、B、C所对应的边为
且
,且
,
(1)求角A的大小;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5e009486af263893ca8290be72f258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90107209b7ef9649eb7c5416cbd059ea.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64672b04b7bcb59202ad0dca57c2ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
3 . 已知向量
,
,函数
的最大值为
.
![](https://img.xkw.com/dksih/QBM/2017/10/19/1798617731457024/1800248744976384/STEM/dbacf81142ef4c17ae56eede869d0798.png?resizew=250)
(1)求
的大小;
(2)将函数
的图象向左平移
个单位,再将所得图象上各点的横坐标缩短为原来的
,纵坐标不变,得到函数
的图象,作出函数
在
的图象.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbda4af19cc04f39e1e5b091b16c636f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0323821b407a53eb9e420797ff9916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72e3df5bbae3650e5f78c9024d09457.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://img.xkw.com/dksih/QBM/2017/10/19/1798617731457024/1800248744976384/STEM/dbacf81142ef4c17ae56eede869d0798.png?resizew=250)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdaf49f9611922348aa2784465da614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ba6200956542712184f3851d44ccec5.png)
您最近一年使用:0次
解题方法
4 . 已知函数
.
(1)作出函数
在一个周期内的图象,并写出其单调递减区间;
(2)当
时,求
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776b20aa601ac7084e26577fccd3733a.png)
(1)作出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
5 . 已知函数
.
(1)求
的最小值;
(2)在
中,角
,
,
的对边分别是
,
,
,若
,
,
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1fdef10f2dbe51b6e85321553c1e6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3b6c5afd011cc6f69fe4865c27b1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ee801d77158b229ca346f342d369958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036b23c94e305faaa1283996edc5b30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
2017-02-08更新
|
1430次组卷
|
7卷引用:福建省泉州市惠安县第十六中学2020届高三上学期期中数学(文)试题
6 . 在锐角
中,角
所对的边分别为
,已知
.
(1)若
,求
;
(2)设函数
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0621f13b09fae1b0cfc83ff1d9a62e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f516fabe62f371cf04d1c1c0544eef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd528d5a2a6f251f58397ebf1531ec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
12-13高三上·福建厦门·期中
7 . 已知向量
,其中
,且
,又函数
的图象与直线
相切,相邻切点之间的距离为
.
(1)求
的值
(2)设
是第一象限角,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01970727425a83e9dce6c2678c3ffd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45632b3ca6ab6c0b05df0d5a838c375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a5ff72ba4e9d01ecf0c0fe07a48058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c055a02fba0827ffcaa92f73ce7720.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71cfe30c3d602f3503ae15cb3e1977cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d334363fba41540fc0e2e994a2c77c28.png)
您最近一年使用:0次
8 . 已知函数
.
(1)求函数
的最小正周期;
(2)将函数
的图象向左平移![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
个单位,向下平移
个单位,得到函数
的图象,求
的值;
(3)求函数
在
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26182e83cd5552577d856ac10f1078a.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325f9e2f7784ebdd64292e805884dfa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907b6765772d6bc20a6225a12f334969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
(3)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
您最近一年使用:0次
9 . 如图,在
中,
,
,
,
为
内一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/7/d3cfd5ee-3d05-4557-bd48-0c8f0eedaf16.png?resizew=183)
(1)若
,求
;
(2)若
,设
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c16d7d1e6841e219a11ee155029af27c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/7/d3cfd5ee-3d05-4557-bd48-0c8f0eedaf16.png?resizew=183)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1698103d7741c8dba5abfd181c2758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ef4d49daaa4bf34247f742b5d32bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b161bf7cb957591b832424ced9845159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
您最近一年使用:0次
解题方法
10 . 如图,点P在
内,
,
,
,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/13/a834dfa3-4503-4b96-95eb-0f9071f115e4.png?resizew=240)
(Ⅰ)用
表示
的长;
(Ⅱ)求四边形
面积的最大值,并求出此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f9c2eef02d97434c2ca2eeff247c60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8e82ee3b356aa257a1d33ccdfea4cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ce705d3a2fe04d29de9e81ec6250d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/13/a834dfa3-4503-4b96-95eb-0f9071f115e4.png?resizew=240)
(Ⅰ)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(Ⅱ)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b027ed57b9c6f24e27ec0ae282c76efa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次