1:1  01-18[数学]李老师教你从向量知识网络中找到突破口
推荐理由：当条件与结论找不到明显的联系，需要从相关的向量知识网络中进行筛选比较，最终找到突破口，发现已知与所求间内在的联系。 讲解人：http://www.jiandan100.cn/teacher/304f1e13a6194c10b1481930926586f9/ ，数学高级教师，北京市中青年骨干教师。 题面：△ABC内接于以O为圆心,1为半径的圆,且 
.求
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 跟帖分享你的答案，即可看到正确答案和解析！别忘了回帖后再点进来查看答案哦~
发现已知与所求之间的内在联系很重要，要多多练习哟！ ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 查看更多本年级每周一题，请点击：http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=382& 浏览本期“简单学习电子周报”完整目录：http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=658520 |
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