已知
,
,其中
.若
,则
的值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b7c21db43a71fddf075d603510eb54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51fa9f296f6f441a2cba9356d28bd65d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a90f71a22daa4df7bd75c1e3e66fcb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f4c0bb1bcbee3e8e418e5a6c2741f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c5a05a11f731194a845e68a0479ce4.png)
A.![]() | B.![]() | C.1 | D.![]() |
更新时间:2021-09-11 22:11:51
|
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单选题
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适中
(0.65)
真题
名校
【推荐1】若
,
是第三象限的角,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea09d1ce53aa17b389604e962ba5bd20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791ad0eef87a579f8eae6e589ea9f8e6.png)
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A.![]() | B.![]() | C.2 | D.-2 |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
【推荐2】在
中,角
所对的边分别是
,且
,若
,则
的值为
![](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/ad7ff1a6e9de32a429b55e95a7c5ccc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4291cfb22a69f65b48d1cd99150a8bae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03005d17bf564371ad29fea41f5c650.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
解题方法
【推荐2】已知向量
,
, 则以下说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b55631345a5a44d4b684df1abc2357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41db77023038261efff763ee859f266.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.![]() ![]() |
您最近一年使用:0次