Respuesta:
1+cosxsinx+sinx1+cosx=sinx(1+cosx)sin2x+(1+cosx)2=sinx(1+cosx)sin2x+1+2cosx+cos2x= recordemos: sin2x+cos2x=1sinx(1+cosx)1+1+2cosx=sinx(1+cosx)2+2cosx=sinx(1+cosx)2(1+cosx)=sinx2=2cscx
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Respuesta:
1+cosxsinx+sinx1+cosx=sinx(1+cosx)sin2x+(1+cosx)2=sinx(1+cosx)sin2x+1+2cosx+cos2x= recordemos: sin2x+cos2x=1sinx(1+cosx)1+1+2cosx=sinx(1+cosx)2+2cosx=sinx(1+cosx)2(1+cosx)=sinx2=2cscx