已知
.
(1)若
,求
的值;
(2)若
是第三象限角,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf1091723aa2c93912b0d57d6b774bf2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08223e107904dade589a99ab517fed18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cb122474dcc2e8977e5a70eee67acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
23-24高一上·福建厦门·阶段练习 查看更多[2]
更新时间:2024-01-25 18:57:18
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00c8f7275f2b13ae25ce1c7c0f0381d.png)
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名校
解题方法
【推荐1】在①
;②
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这三个条件中任选一个,补充在下面问题中,并解决该问题.
已知_______.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5982a2184911a4d73f89ed8a5752a055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b72d1c130ae2e873fc836cbdf44cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f378c75bb69ba514bbd3485d99bc7b29.png)
已知_______.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5fe5e929803a36083dc8c96c89dc83a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9adea860edf8a0f6bbd1c48cc8c39bba.png)
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【推荐2】计算
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次