名校
1 . 已知
,
,且
与
的夹角为
,求:
(1)
在
上的投影;
(2)
;
(3)
与
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8faf351b569991fbdb8d8d30c72e72b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbcc0fa4b480c43e9a66273898c9a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44917f942c3fd36614f58d47b5fe1821.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cc8f1e4ec64189ce6b2400da174cf6.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614b003a9f14fed694128f681b2f1d91.png)
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2019-12-10更新
|
538次组卷
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4卷引用:上海市上师大附中2018-2019学年高二上学期期中数学试题
2 . 已知向量
,向量
与向量
的夹角为
,且
,
(1)求向量
在向量
上的投影;
(2)求向量
的坐标;
(3)若
,
,
,其中A、C是△ABC的内角,若三角形的三内角A、B、C依次成等差数列,试求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26065fff3c4e0e259e6ab21bb6986106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b199d124fb9a5bc8438c9884f04534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12172a74a668b18236ba4e6d4569fd7c.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
(2)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50482f7121a8d6d901c1a93e3514c4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6abb4d5e6622f480c196ba04727ec8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237513fa62c980d2196d57b0281b3887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b8dc2599cb77bbc1db851a98ea3014.png)
您最近一年使用:0次
名校
3 . 已知点
、
、
.
(1)若点
在第二或第三象限,且
,求
的取值范围;
(2)若
,
,
,求
在
方向上投影的取值范围;
(3)若
,求当
,且
的面积为
时,
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32366143230ca122894a4bada7c7b96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24705e5759ac944559f305c694c9f6d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091acaf5c3cbe20a5fff598323dc82be.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af733c6432ce382a8a3fc19ef315ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd84a8f95166367063218ee03ffd5a7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7556b085ed721d309c3376bf5e16ad21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1348dbdeba99934acf4cf5bc6b3bc5a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e36c9c91220b0f2cbd4a48e8fa90e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00da1c29aea46e36cda0f5780966bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe35c91649a5bea2518387a2b36e0c0d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b0b9a2c33a6b08e739435fc55e0f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c747e93ed8de8ad9b477e9c08c84441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4201d3bead2e48cc80052b1418f23db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd84a8f95166367063218ee03ffd5a7.png)
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2019-11-13更新
|
246次组卷
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2卷引用:上海市上海交通大学附属中学2016-2017学年高二下学期期中数学试题
4 . 已知
,
,
,且
.
(1)求向量
在向量
的方向上的投影;
(2)求实数
的值及向量
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4984318d967b210ce49f126794dad06b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab9ba8b25be6459228e9b50b90d91ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22943be0532cd5ff2a68a00de00af59d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac644684176e89d9605a49ab52dd1160.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
(2)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
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5 . 已知
,向量
满足:
,求:
(1)向量
在向量
上的投影;
(2)向量
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07fcbfe058317db56fae22a3941da99.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516730486784/1572516736434176/STEM/1f5efa4a45f54cb687c01594bd89bb9f.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516730486784/1572516736434176/STEM/1f214d0da97345368210f50526dfa747.png)
(1)向量
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516730486784/1572516736434176/STEM/961754907e1c4dc3a9cbb6d4dead14b5.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516730486784/1572516736434176/STEM/e4e39dc4675e405585f93b06a719ff41.png)
(2)向量
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516730486784/1572516736434176/STEM/a3eb6f6a6dff44bcb4c822d95f5fd8af.png)
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2012·四川资阳·二模
名校
解题方法
6 . △ABC中,角A、B、C对边分别是a、b、c,满足
.
(Ⅰ)求角A的大小;
(Ⅱ)求
的最大值,并求取得最大值时角B、C的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86ee0c3e497b5a480d30d07d1b64bfe.png)
(Ⅰ)求角A的大小;
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f939255eec5503e4e186c1f80ef4942f.png)
您最近一年使用:0次
2016-12-02更新
|
3869次组卷
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11卷引用:上海市延安中学2023届高三下学期开学考试数学试题
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