1 . 如图,在平面四边形ABCD中,
,
,
,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5710cd2e-954a-41f0-a1f2-514a4eebc5d0.png?resizew=221)
(1)若
,求BD的长度;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683047ccdc77d3ba0bcbc3a036d3a187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8cc5e8fc797a3a45c253b783631d4e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5710cd2e-954a-41f0-a1f2-514a4eebc5d0.png?resizew=221)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72bf0fce80daad394f2a9d013829c5c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9228b213dc6b256b752b38a466ebec93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43660b1543b3a2b46185f7629d28a963.png)
您最近一年使用:0次
2020-05-08更新
|
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4卷引用:辽宁省沈阳市郊联体2021届高三三模数学试题
名校
2 . 如图,在
中,角
的对边分别为
,向量
,
,且
,若点
是
外接圆
的劣弧
上的点,
,
,
,则四边形
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/516983449108347c9bbf5dd2a72ab3dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d90d7f054e8f0346479e1999622f11cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2c67aa83438942ffac0880653ec0c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429c01b24eda401cff6a3cbe7f16448c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9614567c5a495942e6befc3587d595b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e2a96ad10f818c9a5ad7ef46a304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f976007b8d754ac3bf5793ed2fce37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2436591a889729b1a3bdcca1991a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/dff7f0de-c516-46c9-ae15-cba758c4f32e.png?resizew=128)
您最近一年使用:0次
2019-04-18更新
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3卷引用:【校级联考】辽宁省沈阳市郊联体2019届高三第一次模拟考试(文)数学试题
【校级联考】辽宁省沈阳市郊联体2019届高三第一次模拟考试(文)数学试题【全国百强校】宁夏石嘴山市第三中学2019届高三下学期三模考试数学(文)试题(已下线)专题15 平面向量基本定理及坐标表示-冲刺2020高考跳出题海之高三数学模拟试题精中选萃