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[解三角形]凑齐次式正弦定理辅助角公式求范围
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App03:32![[解三角形]余弦定理面积公式公共变量单调性证明不等式](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/6de08e4995224907a7845207d62a1966~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=2025020310512611A2D6A40370C697408D&requestFrom=704&version_code=80402&x-expires=1770087086&x-signature=BrbeFZy9SBArJqWp4%2F10%2Fek5ud0%3D)
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App06:25![[解三角形]齐次式正弦定理余弦定理算两次求外接圆的半径](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/24773bc14de24239a1a4133b49a2f37a~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=2025020310512611A2D6A40370C697408D&requestFrom=704&version_code=80402&x-expires=1770087086&x-signature=wql%2FdJ0JPcrxcxDR9%2BDvmvXYukM%3D)
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