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[三角函数6]和角公式＆差角公式，三角恒等变换
高一数学同步课堂40/105
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App14:56![[三角函数6]和角公式＆差角公式，三角恒等变换](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/eef21cb2acd443f8a1154f65eee2045f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=AI2esN4BP8NQOs3pTfExPTIxkk0%3D)
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App23:27![正切函数的图像性质[三角函数7]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/b486a761469645949e2e652d89bc36eb~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=1TigKaff1V6CtTNIixtvaWUCbrQ%3D)
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App10:23![三角函数的图像变换＆五点作图法[高中数学]](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/cf2e0ad0e34c4716827e055bc7e100ba~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=ZkpPIf6RK7I0JxcaGMSQSEa0iSY%3D)
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App39:56![[高一数学寒假同步课2]平面向量的三点共线定理](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/b1c07469225044a5ac47b8935df4b7e0~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=ELMGHgdhdGbYkCmIqeVEC8IEE1w%3D)
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App21:06![[三角函数9]二倍角公式＆半角公式&万能公式](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/cf131bd850b241d1827222918fe15021~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=KbnOwWaZslBCsHIEJldn0ntetKI%3D)
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App22:50![[高一数学寒假6]立体几何概念和结构(上集）](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/cbbe7f28d3c8445782d315b8c662f4a9~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=xTQT%2FNbM2C8%2FlGNHb1sbxxvi1c4%3D)
App14:12![[高一数学寒假7]立体几何概念和结构下集）](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/9e58455a1799466cbf3ee820c7c667b6~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=7wF3%2BfLiMK324EHmYDkjmBj7%2FnE%3D)
App19:52![平面向量的基底法VS坐标法，动点问题何去何从？[高一春季1]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/c027483bf51b4ed2849a9c00e886d187~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=85u%2FgPRWi3RXqdHtOrzOeCvj3Pg%3D)
App26:36![平面向量的最值问题，居然需要基本不等式？[高一春季2]](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/f64dc5bdb0b140ea8cebf35efc71242a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=dd3y2eoHBbiMMN2yRftikUcof18%3D)
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App12:51![高中教材上没有的射影定理，大有用处！[高一春季5]](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/3c663716368d41bab1f466e402f7b73f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=BMfME3PeT%2FHOVRxdq88fc9gZeXc%3D)
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App19:51![奔驰定理原来是这样啊！[高中数学]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/afd61e1e48254af98c159abdfd37ac23~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=yW%2BVLr1KdcJqIf2kCEFTAOqfwWw%3D)
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App13:31![立体几何的图形嵌套及体积、表面积[高一春季7]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/268ed7dff1614207bd503158c90879ad~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=7vAQe1CDgeRd2Hs7gcVr9XP5fTA%3D)
App18:38![[高一春季8]内切球与外接球问题，牢记几个常用模型就可以](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/c19a883a41df4844b7f74dc20209bd7a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=ZdmBJ5PjF3P9%2FB5%2BWUDZYjLA3oc%3D)
App12:36![[高一春季10]立体几何面面垂直，其实也不难！](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/63da19ccb0b9416688051af8c7cd3941~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=Xce3H5rnMVfTLaddRZGrU0is5iQ%3D)
App08:29![[高一春季9]立体几何线面垂直，究竟如何理解？](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/4185a9e7ae9f4ad2912d5ee319c6e9dd~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240623053411D93F6B147DCD802B553C&requestFrom=704&version_code=80402&x-expires=1750628052&x-signature=pgQEkkSVWlZNbSpI8PXaRm2V97Y%3D)
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