名校
解题方法
1 . 已知向量
与
的夹角为
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b8769d7bf2001355155359c70d8566.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/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47a99de24f1bdd9dbd91327a25c54f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b72494c40e9c7afffd5238fd53e2e3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b8769d7bf2001355155359c70d8566.png)
您最近一年使用:0次
2022-09-07更新
|
257次组卷
|
2卷引用:四川省射洪中学校2022-2023学年高二上学期入学考试数学试题
名校
解题方法
2 . 已知点
在直角
的斜边
上,若
,
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a660138ef66fa07bc064786582caf781.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-09-06更新
|
973次组卷
|
5卷引用:四川省巴中市2022-2023学年高三上学期零诊考试数学(理科)试题
名校
解题方法
3 . 在
中,角A、B、C所对的边分别为a、b、c,
,向量
,且
,
面积的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5121ef7a328ad38cfa272267cee9463f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解题方法
4 . 已知平面向量
均为非零向量,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96022a881e03e32d3483d997c3f170c6.png)
A.若![]() ![]() | B.![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
解题方法
5 . 在平行四边形
中,
,
,点
为
的中点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b45197ef8fe807d24c9c56481885b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
您最近一年使用:0次
解题方法
6 . 已知平面向量
满足
,且
.
(1)求
与
的夹角;
(2)求向量
在向量
上的投影.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773d1f865a031cea9a9fa2e8f7db9afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e49702961fda9a103923034c2a1cb8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
(2)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03adf3fa0262d9bd46a2c794eb15746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b91254db5ff748150f449c5cdd256c.png)
您最近一年使用:0次
2022-09-06更新
|
700次组卷
|
3卷引用:四川省绵阳市2021-2022学年高一下学期期末数学试题
解题方法
7 . 已知平面向量
满足
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1993aceae20875871996675a12191965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1caac1cb1aabeb5ebb5b44cf7c6c2524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
名校
解题方法
8 . 已知
,
,且
.则
与
夹角的余弦值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf342e77c56e55a35bb1151bc215a3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37157acb52896b1d3d067adc7d381b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
您最近一年使用:0次
2022-09-06更新
|
239次组卷
|
3卷引用:四川省达州市开江县开江中学2022-2023学年高三上学期入学考试数学(文)试题
名校
解题方法
9 . 在
中,
.若
,
,且
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07fa2c74a3915137e54e91f0723cf54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1277062e6e845973b2a6b53eb5e4879e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c290cdc4cf3d6b82581e68ecaf5c7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245cb202b766d879e70086b7b409f54a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
10 . 已知平面向量
,
,
满足
,且
,则
的值为________ .
![](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/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e29168fe500dd6e7014659fc80a774e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ccbe20a27a124f25fa60ec4b276a964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df431d7a6a19e2084e5415aa76562e11.png)
您最近一年使用:0次
2022-08-25更新
|
1520次组卷
|
4卷引用:四川省成都市成都市第七中学2022-2023学年高三上学期10月月考数学(理)试题