名校
1 . 已知
,
,则
在
方向上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e8102c7b25df11719d3a94953e35e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2a85b8a405348b87094e4aacaa09a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b91254db5ff748150f449c5cdd256c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-05-25更新
|
529次组卷
|
3卷引用:重庆市外国语学校2019-2020学年高一下学期6月月考数学试题
名校
2 . 已知向量
,向量
,则向量
在向量
上的投影为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016e4d15ab8f5359f6aa3b42674b0c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa65a81f376d637326fbe72cdb1b2388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
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2020-04-07更新
|
548次组卷
|
2卷引用:重庆市松树桥中学2019-2020学年高三下学期第二次月考数学(文)试题
名校
3 . 已知向量
,
,则向量
在向量
方向上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f89d9cd2d59f0d0366e64469ad376b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3bb7ccb422f0c02385a5adcd1606c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.-1 | B.![]() | C.![]() | D.1 |
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2020-03-04更新
|
377次组卷
|
4卷引用:2018届重庆市中山外国语学校高三全真模拟(文)数学试题
名校
4 . 在△ABC中,角A,B,C的对边分别为a,b,c,若
,
,则
在
方向上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f90aff0ea9fb08a5790627aa4de8704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a41ac4035d53ae79bf8d6b8ff4172e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a1b3d5f4068fbcba6e4b47971d51a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00490134f8caa9cc28910fb1aaff85e7.png)
A.1 | B.2 | C.3 | D.4 |
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2020-03-04更新
|
1689次组卷
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6卷引用:重庆市缙云教育联盟2020-2021学年高二上学期10月月考数学试题
重庆市缙云教育联盟2020-2021学年高二上学期10月月考数学试题四川省遂宁市2018-2019学年高一下学期期末数学试题四川省泸州市泸县第一中学2019-2020学年高一下学期第四学月考试数学试题四川省眉山市2019-2020学年高一下学期期末考试数学试题云南省昆明市官渡区第一中学2019-2020学年高二上学期开学考试数学试题(已下线)8.1.1 向量数量积的概念-2020-2021学年高一数学课时同步练(人教B版2019必修第三册)
名校
5 . 在
中,内角
、
、
所对的边分别为
、
、
,且
.
(1)求
的值;
(2)若
,
,求向量
在
方向上的投影.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/0d1e570e6b88f8b5fbbd6230f4a4af60.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
您最近一年使用:0次
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解题方法
6 . 已知两个单位向量
和
夹角为
,则向量
在向量
方向上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b98386771bbcbdb72732c37633dff29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
7 . 设
与
是单位向量,且其夹角为
,若
,
,则
在
上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bd8a052e56b53a66497b4b55a968a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc155e36276a2226c40a1f4ef7a0f41a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65926c95e2e173965c6783bb04edde6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e526afe3135e87262acd1c9983dff840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
A.![]() | B.1 | C.2 | D.3 |
您最近一年使用:0次
名校
解题方法
8 . 已知向量
,
,若
,则向量
在向量
方向上的投影等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37747a127a9c714d155988e2c454bae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f17289d7c046a3fddab9b12f77cd31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfcc96cc28d19ffce3d0de9059ac306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
9 . 已知
,
与
的夹角
,则
在
方向上的投影为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0b40ab957abd03f1db03ddf71242fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3cc805723d3ecc95b4472d13bb1bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1f08c7640e62e8717abf4d44a6c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3cc805723d3ecc95b4472d13bb1bb6.png)
您最近一年使用:0次
2020-02-17更新
|
412次组卷
|
5卷引用:重庆市实验外国语学校2018-2019学年高一下学期高中学业质量调研抽测数学试题
名校
10 . 已知P为双曲线
左支上一点,
,
分别是双曲线的左、右焦点,且
,Q为y轴上一点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2855d0a2c217c344a0823bfc8f954d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9ad6b497921ad511cd16fa2dd91907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e458007c0bc29d629d693bd5238e8d9f.png)
A.![]() | B.8 | C.![]() | D.20 |
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