名校
解题方法
1 . 已知向量
,向量
,
,则角
可以 等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911ab72d17847a344f1c4638f865f090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51cfc1ef4479b10fe0e1d4008e1e567a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.45° | B.60° | C.90° | D.135° |
您最近一年使用:0次
名校
2 . 在
中,角
,
,
的对边分别是
,
,
,且
,
,
,则
等于( )
![](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/43b86d43790babcdbbdc03493ee70928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09947ea5c9ea0fe010027f2aa91138b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23abe59f777592c19223140a8060e9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 已知向量
、
满足
,
,且
与
的夹角为
,
(1)求
的值;
(2)当
为何值时,
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ae0d7b3266f32b6a916b6237b6b838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166590ee5c5f1472b32be38f8bba1891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39d1d88189726ae99c309644fca3494.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698333f960fad71c4d7e6fa7f4805e89.png)
您最近一年使用:0次
2021-03-28更新
|
71次组卷
|
2卷引用:西藏日喀则市上海实验学校2020-2021学年高二上学期期中考试数学(文)试题
名校
解题方法
4 . 在平面直角坐标系
中,已知四边形
是平行四边形,且
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3576ad2d3acf6136df34f6277d0607f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbaa7252fe080c68ae4ceadabedfb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56bf6c5c852705f9f10fc59e9a2d1694.png)
A.![]() | B.5 | C.![]() | D.7 |
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名校
5 . 在△ABC中,已知
,
,
,解这个三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd07e8a88a2413704e90721ab49315f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b06b97ea72f3f801326f3a275ed9356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe550a188fbddebbdc5ada963d6ea670.png)
您最近一年使用:0次
2021-03-25更新
|
131次组卷
|
5卷引用:西藏日喀则市上海实验学校2019-2020学年高二上期期末考试数学(理)试题
西藏日喀则市上海实验学校2019-2020学年高二上期期末考试数学(理)试题专题05 余弦定理、正弦定理(知识精讲)-【新教材精创】2019-2020高一数学新教材知识讲学(人教A版必修第二册)-《高中新教材知识讲学》(已下线)11.1 余弦定理-2021-2022学年高一数学10分钟课前预习练(苏教版2019必修第二册)(已下线)第13讲 余弦定理(已下线)专题10余弦定理-【寒假自学课】(沪教版2020)
名校
解题方法
6 . 若实数
满足
,则
的最大值是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b612c9c5c735c4223a0faa9b188eae99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089a020eb7145635379e02cebe8bbbd4.png)
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7 . 已知数列
的前n项和是
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab60be77b2de736d07d5dd61e395e56c.png)
A.20 | B.18 | C.16 | D.14 |
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名校
8 . 在△
中,若
,则A等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601c7ccb1f3d706b6fcc9d9d94272b78.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2021-03-25更新
|
853次组卷
|
2卷引用:西藏日喀则市上海实验学校2019-2020学年高二上期期末考试数学(理)试题
名校
解题方法
9 . 过双曲线
的左焦点
作倾斜角为
的直线
,直线
与双曲线交于A,B两点,求|AB|的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c477e5ade921ffa8377c4719319380ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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名校
解题方法
10 . 执行如图所示的程序框图,若输入的点为
,则输出的
值为( )
![](https://img.xkw.com/dksih/QBM/2021/3/20/2681850559111168/2685407182962688/STEM/9a44ada629c64c10a6c6d18e26bc7c94.png?resizew=238)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c9708ef0dc6d6f5dcf6596d3e4f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/2021/3/20/2681850559111168/2685407182962688/STEM/9a44ada629c64c10a6c6d18e26bc7c94.png?resizew=238)
A.3 | B.4 | C.5 | D.6 |
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