1 . (1)在
中,若
,则
一定是__________ 三角形
请填写锐角,直角,或钝角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(2)
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f774cd650f14c8f6e4fe0c6a432768bb.png)
_________ .
(3)已知复数z满足
,则
的最小值是________ .
(4)如图所示,空间四边形ABCD中,两条对边
,
分别是另外两条对边
上的点,且
,则异面直线AB和CD所成角的大小为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ee200d87dc576c5259be96bc0431c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301324443eb93b467134a86890dd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc56eba6d1e1c9d293d648a756de4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f774cd650f14c8f6e4fe0c6a432768bb.png)
(3)已知复数z满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839ba7c0f1fc30151d18a2e337951dd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf22958b9d397bce8d3b950c8fefbae8.png)
(4)如图所示,空间四边形ABCD中,两条对边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e0f9d0d28bfb81ad132e0064402573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d93949d8a15aca4e79cedb978590571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65367e9651ecd42fce6a7ae585a5d4a3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/13/fb8817ed-8550-418d-a744-bf78d0539598.png?resizew=167)
您最近一年使用:0次
名校
解题方法
2 . 在①
,②
,③
三个条件中任选一个,补充到下面问题中,并解答.
已知锐角
的内角A,B,C,的对边分别为a,b,c满足_______(填写序号即可)
(1)求B﹔
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889154337f8307c4668cf09b35f1f62a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3295df3aed276cc7eab6f9c3c882a6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3ec7c32ed835274bead80131a96cd9.png)
已知锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)求B﹔
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
您最近一年使用:0次
2022-05-27更新
|
1482次组卷
|
7卷引用:云南省曲靖市罗平长水实验中学2023-2024学年高二上学期9月月考数学试题
名校
解题方法
3 . 在①
,②
,请在这两个条件中任选一个,补充到下面问题中,并完成解答.
在
中,角A,B,C所对的边分别为a,b,c,设
为
的面积,满足______________(填写序号即可).
(1)求角C的大小;
(2)若
,求
周长的最大值.
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8778d299f04be0239159ce906608673e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dd0c2a4a1107ea28a418a7d281ef5e.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)求角C的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb5bac75f36bb1dc5c8190d4dbe681d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
2022-09-15更新
|
1182次组卷
|
7卷引用:辽宁省六校协作体2023-2024学年高二上学期10月联考数学试题
4 . 在①
;②
;③
.
这三个条件中任选一个,补充在下面的问题中,并解答问题:
在
中,内角
,
,
的对边分别为
,
,
,且满足条件______(填写所选条件的序号).
(1)求角
;
(2)若
的面积为
,
为
的中点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab54f4110ac6aa02511617862c5a64b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b639af9d5bba1e01f761bca1edc5942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13b5f652b386eee39aab79d1fb04465.png)
这三个条件中任选一个,补充在下面的问题中,并解答问题:
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a554e03744b5befe9e0939377dafa8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2021-09-30更新
|
823次组卷
|
6卷引用:吉林省长春市第二实验中学2023-2024学年高三上学期9月月考数学试题