T
trankhiemminh


Giải pt
1) [TEX]sinx * ( 1+ cosx ) = 1 + cosx + cos^2 x[/TEX]
2) [TEX]cos^3 x + cos^2 x +2 sinx -2 =0[/TEX]
1) [TEX]sinx * ( 1+ cosx ) = 1 + cosx + cos^2 x[/TEX]
2) [TEX]cos^3 x + cos^2 x +2 sinx -2 =0[/TEX]