设
,
是三角形的两个内角,下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
更新时间:2020-01-10 15:53:15
|
【知识点】 三角函数图象的综合应用解读
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单选题
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适中
(0.65)
名校
【推荐1】已知函数
是
上的偶函数,且图像关于直线
对称,且在区间
上是单调函数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2473e6fe44127414d3a194424b14133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8ec84fcb2cc327f33e15f1c3babf4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a718fc40d18a28583a1f8abc112291b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fedba0098cf55c726752e3d7ebb96d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2473e6fe44127414d3a194424b14133.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
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单选题
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【推荐2】已知函数
的一个零点是
,并且
图象的一条对称轴是
,则当
取得最小值时,函数
的单调递减区间是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d73ced76e9cb354d6216119aaf55ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d149d6494edb039646fb153d6cb00bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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