21-22高二上·福建厦门·开学考试
名校
1 . 已知角
,
,
是
的内角,向量
,
,
.
(1)求角
的大小;
(2)求函数
的值域.
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229b9c775390c6cd6b708aa01ac62a6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7236e8fb8c680c0065df93f477d15969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cb5138a03b19266f82223899a614f7.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b96a95a7a0df1e8c3f366ebdd938a29.png)
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2021-09-25更新
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