![](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 :
1) [TEX] sinx+cosx=\sqrt{2}cos(3x+\dfrac{\Pi }{6})[/TEX]
2) [TEX]sin^2x + sin^22x = cos^22x + cos^26x[/TEX]
3) [TEX]tan(\dfrac{\Pi }{2}.sinx)=1[/TEX]
1) [TEX] sinx+cosx=\sqrt{2}cos(3x+\dfrac{\Pi }{6})[/TEX]
2) [TEX]sin^2x + sin^22x = cos^22x + cos^26x[/TEX]
3) [TEX]tan(\dfrac{\Pi }{2}.sinx)=1[/TEX]