如图,在
中,
,若
,
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/42dce762-1bc4-4c0e-a88c-a28185d31fcd.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/42dce762-1bc4-4c0e-a88c-a28185d31fcd.png?resizew=151)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-02-13 17:43:56
|
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单选题
|
容易
(0.94)
【推荐1】定义:圆心在原点,半径为1的圆称为单位圆.如图,已知点
在单位圆上,则
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/35c95ba1-7ecf-4245-ad92-418747f0fe6b.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e0c1f836a09c977c85e746b0493655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7d08db3d689c60ace3b0939b86c8a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/35c95ba1-7ecf-4245-ad92-418747f0fe6b.png?resizew=134)
A.![]() | B.![]() | C.![]() | D.![]() |
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