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一道极其优美的三角函数证明题 太巧妙了! 令人赞叹的美妙证明 !
把复数向量和三角函数融为一炉，使复杂题目的解决变得更加简单
世界各国经典奥数题赏析 掌握数学思想 提高解题能力 #学浪计划#7/139
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App02:03![俄罗斯数学竞赛题 解不等式:√[2x－√(48x－144)]＞2x－12](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/6a7bacdfabd644e5a314ff7f620ad4d7~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2025010420534020ABB23C9BAEF4F74BC5&requestFrom=704&version_code=80402&x-expires=1767531220&x-signature=G2gD9uGf9PajD4PUEAwjHRur%2FsU%3D)
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