已知
,
,且
,
,求:
(1)
的值;
(2)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff81171e8634ac56f678a245781517a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f593eac79d2ef9cae8257cb05d22dc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2d00ef3a01f64abcd50284fa21c85e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f021a65c471011ee58a992ec8bf79f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db796b223b35e52aa7b4114da8072f5.png)
更新时间:2024-05-20 10:42:59
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(2)若
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【推荐2】在①
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【推荐1】如图所示,在单位圆中,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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