2010高三·江苏南通·专题练习
解题方法
1 . 在
中,已知
,
则
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e74f7b97c2a7bf4504cf187f1bd1e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c244862fc37c26292258d0087e476f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf586f28e8fbdd8c30227f60d1aba660.png)
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2016-11-30更新
|
735次组卷
|
3卷引用:江苏南通市通州区2010高三查漏补缺专项练习数学理
解题方法
2 . 在
中,已知
,
,
在
上,
,若
,则
的长是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2997d56e933559b51ff87ac8d07e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266f549097086333487afc0d06763c30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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2014·江苏盐城·三模
3 . 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)
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4 .
、
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)
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2010·河北衡水·三模
解题方法
5 . 直线
与圆
相交于
、
两点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b5edc5de192b9f08baa27e7de51625.png)
_________ .(其中
为坐标原点)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b6e44dd054b54f89e7c237eb1428da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c69140c9aaaeb912ebb5c64ca8e15bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b5edc5de192b9f08baa27e7de51625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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2016-12-04更新
|
861次组卷
|
5卷引用:2015-2016学年江苏省南通市天星湖中学高二上学期期中考试数学试卷
2015-2016学年江苏省南通市天星湖中学高二上学期期中考试数学试卷(已下线)黄金30题系列 高二年级数学江苏版 小题好拿分【提升版】(已下线)河北省衡水中学2010届高三第三次模拟考试数学试卷(理科)四川省雅安市2017届高三下学期第三次诊断考试数学(文)试题四川省泸州市合江县马街中学校2023-2024学年高二上学期期中数学试题
2018高一上·江苏·专题练习
6 . 已知向量
是单位向量,且
,则
的最小值是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b346e051dfe3cc1b104315f08d9223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8696e3fade5b5676b996414b895ba4c1.png)
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11-12高一下·江苏淮安·阶段练习
7 . 已知
,
与
的夹角为
.求:
(1)
;
(2)
;
(3)若在
中,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059a8ea5cd70716f6e1b1a89288bd592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6383c81ccdb670a050bdd222aa046ed2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffc403ded5faedb326b83d5d3f69a30.png)
(3)若在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6619ea3f677ba564d9cfddd220577a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2014高三·全国·专题练习
解题方法
8 . 在△ABC中,若AB=1,AC=
|
+
|=|
|,则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d792a2aa25763e14cc2863be3887000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9aa2e64a006d2978b7a6945b126db42.png)
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2011·江苏淮安·模拟预测
9 . 如图,A,B,C是直线l上三点,P是直线l外一点,已知AB=BC=a,∠APB=90°,∠BPC=45°,记∠PBA=θ,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7116c83b27919929d0539de4150cb05.png)
_____ .(用a表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7116c83b27919929d0539de4150cb05.png)
![](https://img.xkw.com/dksih/QBM/2011/5/22/1570214687686656/1570214692806656/STEM/16318e25-ebc5-438f-9d51-598e55cc17be.png?resizew=386)
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13-14高三上·江苏连云港·期中
解题方法
10 . 设O是
的三边中垂线的交点,
分别为角
对应的边,已知
,则
的范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cb7403c7444c79687fdb4336fdff92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc932d96cbeffffd8c0e81db654cb93.png)
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