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解题方法
1 . 平面直角坐标系中,角
的始边与x轴非负半轴重合,终边与单位圆的交点为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6762719d09b4bf715b2f145c322019.png)
(1)求
,
;
(2)化简并求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6762719d09b4bf715b2f145c322019.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0d017a14fc3c0f3134a98571121550.png)
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2024-01-18更新
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399次组卷
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2卷引用:重庆市渝中区巴蜀中学校2023-2024学年高一上学期1月期末数学试题