已知
都为锐角,
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8396163f804cd8f4cda8a5db45192d14.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f35152720e43c6403d43bef47c0377d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6abc69c57972a4efb8301e3308ea9ca6.png)
更新时间:2022-03-29 21:41:19
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解题方法
【推荐1】(1)已知
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您最近一年使用:0次
【推荐2】在平面直角坐标系中,已知角
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(1)求
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(2)若角
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579caafab6d26fb86305c93991bc4a29.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
③角
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9107d039a689ac0d6010ed7a6e572908.png)
请从上述三个条件中任选一个,你的选择是________.求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d521f8d021b20757d7a68107fcef1d.png)
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