1 . 在
中,若
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4187249d523f857e169c11c09efcc1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
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2011·江苏南京·一模
名校
2 . 在△ABC中,已知AB=4,AC=3,P是边BC的垂直平分线上的一点,则
=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd7c8b366a515d6f4b7bd0d721a7dbb.png)
您最近一年使用:0次
名校
解题方法
3 . 设
面积的大小为
,且
.
(1)求
的值;
(2)若
,
,求
.
![](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/05490f000d618b37f6df19f555f1db24.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3578b63c5903089595bf324c809a997c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49df6c4a029846ad635e714c052056d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
2017-05-14更新
|
513次组卷
|
3卷引用:江苏省盐城市2017届高三第三次模拟考试数学(理)试题
名校
4 . 在平面四边形
中,对角线
,
相交于点
,
,
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a71ab7059930614e4ede8709040d75.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1eb76fe74cba30f7cbcde349ba80da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1522cbc54d32f2382d61a5a9858c5cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a71ab7059930614e4ede8709040d75.png)
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解题方法
5 . 已知向量
,
,
满足
,且
,则
的值为 _________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2f3fc61c6be59729509b71da1b3d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be41885a95a82487e9941b3ae77e9106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf586f28e8fbdd8c30227f60d1aba660.png)
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名校
解题方法
6 . 在等腰直角
中,
为AC边上的两个动点,且满足
,则
的取值范围为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800925708fa0c88952a4ce8c3676df11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192a35f0603f57bcc6ec1e75927ba916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd948a01f840010aaf456053245a0fc.png)
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2016-12-04更新
|
507次组卷
|
5卷引用:2016届江苏省苏州大学高考考前指导卷1数学试卷
2014·江苏盐城·三模
7 . 在
中,角
的对边分别为
,若
.
(1)求证:
;
(2)当
,
时,求
的面积
![](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/ce6df794797b2398a339319517c3bc8a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1d5fd545ad966051d98b7ee0832015.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46f8fd790b959d0ce74a6d8d884c951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2020·江苏·二模
解题方法
8 . 在
中,
,
,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c528a7334eda7f7d6133f1d6fb1496.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de4f452b23fe85c854f75029d7de1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c528a7334eda7f7d6133f1d6fb1496.png)
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9 .
、
为单位向量,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68ccbe4d4e6109c90007959c9edcc50.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd909e7222cbf8f532204e47600f3e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fd564f202482bd418990c69205cf8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8f62bfaff5bec383cdb2c1e1ed157f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68ccbe4d4e6109c90007959c9edcc50.png)
您最近一年使用:0次