M
myhien_1710
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Giải phương trình lượng giác :
[TEX](\frac{(sinx)^3sin3x+(cosx)^3cos3x}{tan(x-\frac{\pi}{6})tan(x+\frac{\pi}{3}))=\frac{1}{8}[/TEX]
[TEX](\frac{(sinx)^3sin3x+(cosx)^3cos3x}{tan(x-\frac{\pi}{6})tan(x+\frac{\pi}{3}))=\frac{1}{8}[/TEX]
Last edited by a moderator: