1 . 已知
.
(1)若
为第三象限角,求
.
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ea55db82683a35eb6f708123a6e582.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba3ed644ddf1c0bcf9b311c014eec0e.png)
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2020-01-19更新
|
174次组卷
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2卷引用:四川省宜宾市叙州区第二中学校2022-2023学年高一下学期开学考试数学试题
2 . (1)求sin65°cos(﹣35°)﹣sin25°sin145°的值;
(2)已知tanα
,tanβ
,求tan(α+2β)的值.
(2)已知tanα
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9e42dd7d2041076675df759078795d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34efd0021d06e31448496f3673eb2a45.png)
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3 . 已知
为
的内角,且
,计算:
(1)
; (2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7fdccadfa7469825f8a5ccbf495c24.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a39ee003ce154b19561409afdddb7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0500583b83b9299ddb161037467039e9.png)
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4 . 在平面直角坐标系
中,若角
的始边为
轴的非负半轴,其终边经过点
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1486450f300f451e711d2238eaca1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d31ef7fd1701108886fb92eb1f396c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287c7fac84bbce7fc522c21e9b528843.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62652a674083e169b1cbdf1dff8d372.png)
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