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hatcat_sad


giải pt:
1) 1+sinx +cosx + sin2x +cos2x =0
2) 2căn2.cos^3( x-pi/4) - 3cosx -sinx =0
3) tan(3pi/2 -x) +sinx / (1+cosx) =2
4) sin2x +cos2x -3sinx -cosx -2 =0
1) 1+sinx +cosx + sin2x +cos2x =0
2) 2căn2.cos^3( x-pi/4) - 3cosx -sinx =0
3) tan(3pi/2 -x) +sinx / (1+cosx) =2
4) sin2x +cos2x -3sinx -cosx -2 =0