打开App
360P
[三角函数]降幂升角合二为一求对称轴方程
03三角函数典例精粹50/82
![[三角函数]寻求角的关系 + 整体代换搞定三角求值](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/3d4e23330ff748edae82243ad780fa25~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=20250121045606199C1B17F84FBE5419F8&requestFrom=704&version_code=80402&x-expires=1768942566&x-signature=oxjd76r7sVepMlR2YMiPMb%2BOsG4%3D)
App03:20![[三角函数]降幂升角合二为一求对称轴方程](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/7a5a379926ca459484f707559082fa11~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=20250121045606199C1B17F84FBE5419F8&requestFrom=704&version_code=80402&x-expires=1768942566&x-signature=HT7s6BkytMZjPmhGpL8%2BN8DaGzc%3D)
App03:16
App03:14![[三角函数]拆项换元解决给值求值问题](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/8a15d475be3c4fbb8ec76c41d74500bb~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=20250121045606199C1B17F84FBE5419F8&requestFrom=704&version_code=80402&x-expires=1768942566&x-signature=rgxpbJuQ9kC1gXJyH8dM%2BWOwsqY%3D)
App03:11
App06:51![[三角函数]一题多解+活用公式 →提升数学运算素养](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/be4ffa698dc44757bfe142b2c3acef21~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=20250121045606199C1B17F84FBE5419F8&requestFrom=704&version_code=80402&x-expires=1768942566&x-signature=b2rJGt5fJEHMEZhdjuFaVS7Efok%3D)
App03:13
App05:33
App02:52
App02:57
App02:53
App04:54
App02:46
App05:38
App02:52
App02:19
App01:57
App03:59
App01:10
App02:16
App02:16
App02:38
App01:53
App02:33
App03:02
App02:38
App02:15
App04:06
App02:14
App04:02
App04:13
App02:32打开App观看
