sin^4a-cos^4a=sin^2a-cos^2a
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 20:33:22
![sin^4a-cos^4a=sin^2a-cos^2a](/uploads/image/z/129182-14-2.jpg?t=sin%5E4a-cos%5E4a%3Dsin%5E2a-cos%5E2a)
sin^4a-cos^4a=sin^2a-cos^2a
sin^4a-cos^4a=sin^2a-cos^2a
sin^4a-cos^4a=sin^2a-cos^2a
sin^4a-cos^4a=(sin^2a-cos^2a)(sin^2a+cos^2a)=(sin^2a-cos^2a)*1=sin^2a-cos^2a
收录互联网各类作业题目,免费共享学生作业习题
作文号手机作业共收录了 千万级 学生作业题目
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 20:33:22
sin^4a-cos^4a=sin^2a-cos^2a
sin^4a-cos^4a=sin^2a-cos^2a
sin^4a-cos^4a=sin^2a-cos^2a
sin^4a-cos^4a=(sin^2a-cos^2a)(sin^2a+cos^2a)=(sin^2a-cos^2a)*1=sin^2a-cos^2a