如图,
中的内角
、
、
所对的边分别为
、
、
,
,
且
.
![](https://img.xkw.com/dksih/QBM/2020/11/26/2601383480901632/2605619552763904/STEM/ecf7b4f8-0df6-472e-b8f1-a5ad636e4744.png?resizew=162)
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)点
在
边的延长线上,且
,求
的长.
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be103fd3ce46a6b6f271e60523597c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93839acd6b86cd9df7c5518c82bb10cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150086fc9d82add11bbe76918f943d25.png)
![](https://img.xkw.com/dksih/QBM/2020/11/26/2601383480901632/2605619552763904/STEM/ecf7b4f8-0df6-472e-b8f1-a5ad636e4744.png?resizew=162)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)点
![](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/7d017fb3116652c7487f2889a480ace4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
20-21高三上·湖北武汉·期中 查看更多[3]
湖北省武汉市华中师大一附中2020-2021学年高三上学期期中数学试题(已下线)黄金卷04-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(新高考专用)(已下线)2021届高三高考数学适应性测试八省联考考后仿真系列卷八
更新时间:2020-12-02 18:09:27
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【推荐1】(1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59bb6539f03daf9ab48ea262586fddf.png)
(2)已知
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(2)已知
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名校
【推荐2】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e161ed79ed31d97657512be87aedece.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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解答题-问答题
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适中
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【推荐1】在
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca499dcae366e98757a02e97b82c6f63.png)
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【推荐2】在
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(1)若
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(2)若点
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解题方法
【推荐1】如图,平面凸四边形
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,
,______,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301baf6cc0628366e6661a87a2d93ed.png)
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