解题方法
1 . 已知
是锐角,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6896ab9d37dfa131c890360bfa7c9a1.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4713426ad6554476038e1fb9b2913c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6896ab9d37dfa131c890360bfa7c9a1.png)
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2020-06-12更新
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437次组卷
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2卷引用:山西省阳泉市2021届高三三模数学(文)试题