M
misshaudau9x
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
[TEX]1 . ( cos^2 3 x + sin^23x)^2 = cos52x[/TEX]
[TEX]2. sin3x.cos3x + cos3x.sin3x = sin34x[/TEX]
[TEX]3. tanx + cotx =2.(sin2x + cos2x)[/TEX]
[TEX]4. sin8x + cos8x =\frac{17}{32}[/TEX]
[TEX]5. 4(sin3x - cos 2x) = 5(sinx -1)[/TEX]
[TEX]6. |sinx - cos x|+ |sinx + cosx |= 2[/TEX]
[TEX]7. cos3x + cox2x -cosx -1 =0 [/TEX]
[TEX]8.cos7x . cos5x - \sqrt{3} . sin2x = 1-sin7xsin5x [/TEX]
[TEX]2. sin3x.cos3x + cos3x.sin3x = sin34x[/TEX]
[TEX]3. tanx + cotx =2.(sin2x + cos2x)[/TEX]
[TEX]4. sin8x + cos8x =\frac{17}{32}[/TEX]
[TEX]5. 4(sin3x - cos 2x) = 5(sinx -1)[/TEX]
[TEX]6. |sinx - cos x|+ |sinx + cosx |= 2[/TEX]
[TEX]7. cos3x + cox2x -cosx -1 =0 [/TEX]
[TEX]8.cos7x . cos5x - \sqrt{3} . sin2x = 1-sin7xsin5x [/TEX]
Last edited by a moderator: