已知
为锐角,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
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19-20高三·新疆乌鲁木齐·阶段练习 查看更多[3]
新疆维吾尔自治区乌鲁木齐市2019-2020学年高三第一次诊断性测试数学文试题新疆维吾尔自治区乌鲁木齐市2019-2020学年高三第一次诊断性测试数学理试题(已下线)2020届高三1月(考点04)(理科)-《新题速递·数学》
更新时间:2020-01-17 15:15:50
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、
均为锐角,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8807d7a6387cd566aa94f0e1732f4676.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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