1 . (1)已知
若
,求x的取值范围.(结果用区间表示)
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0425f3ba20bd0223f43bf912712f72.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151801b91dfe213a5bf6108f1e5f8f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064ea036b3c644dbf935ec036d118684.png)
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2 . 如图所示,角
的终边与单位圆在第一象限交于点
.且点
的横坐标为
,若角
的终边与角
的终边关于
轴对称,则( )
![](https://img.xkw.com/dksih/QBM/2022/1/22/2900011722899456/2915739091288064/STEM/3cac2ff62f8d4e2bb4475f8b0e8525d5.png?resizew=236)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954795d1842974a705f9468f3b952ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/2022/1/22/2900011722899456/2915739091288064/STEM/3cac2ff62f8d4e2bb4475f8b0e8525d5.png?resizew=236)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
3 . 甲、乙两位同学解答一道题:“已知
,
,求
的值.”
则在上述两种解答过程中( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7eec4ebc8b06a459024997887b164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0927c44a59a0c93d9db3c2aadd63a60e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b1cabdfa25efb04599e73a2fa919ae.png)
甲同学解答过程如下: 解:由 ![]() ![]() 因为 ![]() 所以 ![]() 所以 ![]() ![]() ![]() | 乙同学解答过程如下: 解:因为 ![]() 所以 ![]() ![]()
|
A.甲同学解答正确,乙同学解答不正确 | B.乙同学解答正确,甲同学解答不正确 |
C.甲、乙两同学解答都正确 | D.甲、乙两同学解答都不正确 |
您最近一年使用:0次
2022-01-16更新
|
472次组卷
|
2卷引用:北京市通州区2021-2022学年高一上学期期末数学试题