1
123tuananh


[TEX]2tan(2x)-sin(2x-\frac{3pi}{2})+\frac{cosx-sinx}{cosx+sinx}=1[/TEX]
[TEX]\sqrt{3}sin(3x-\frac{pi}{5})+2sin(8x-\frac{pi}{3})=2sin(2x+\frac{11pi}{15})+3cos(3x-\frac{pi}{5})[/TEX]
[TEX]\sqrt{3}sin(3x-\frac{pi}{5})+2sin(8x-\frac{pi}{3})=2sin(2x+\frac{11pi}{15})+3cos(3x-\frac{pi}{5})[/TEX]
Last edited by a moderator: