名校
解题方法
1 . 在
中,角
所对的边分别是
,
为
的角平分线,已知
且
,
.
(1)求
的面积;
(2)设点
分别为边
上的动点,线段
交
于
,且
的面积为
面积的一半,求
的最小值.
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780a200b21d4d92949679a2c514d89e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752b03cf16d840d0c83f81d91cb033f4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf899fa381162d5ddd95122c430dc6f.png)
您最近一年使用:0次
2022-05-17更新
|
2197次组卷
|
9卷引用:黑龙江省大庆市大庆铁人中学2022-2023学年高一下学期期末数学试题
名校
2 . 在
中,
,且
与
的夹角为
,
.
(1)求
的值;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6765a87bcc2b6d44aabdee9af73e6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4411b23a3a134239cdc615b00f897e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efd8cf0cc386faa170d01f357b1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d74987353e90645db6cfa80bf84dce.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b02c4c125ca6b5a01b07aa65121919.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d9784c02b7952da1d958a025b195a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2399af2dd07e6d0af3a61668951c0ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
您最近一年使用:0次
2018-12-17更新
|
1154次组卷
|
3卷引用:【全国百强校】黑龙江省大庆实验中学2018-2019学年高一上学期期末考试数学试题
11-12高一上·黑龙江绥化·期末
3 . (1)求值
.
(2)如图
中,点
在直线
上且满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5604756f71d628ab37c914dba0e9d44f.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2981bf2261343f905ec1b5355a3c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20e4909ce02aaeef962be8f9363a1c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d6fc4169af3dcd538bed5a88ee45a0.png)
![](https://img.xkw.com/dksih/QBM/2011/2/12/1569984698941440/1569984704217088/STEM/ffcf082b4f374691a0b37c9140c9d3f7.png?resizew=127)
您最近一年使用:0次