Question

Me ayudan a resolver urgente !
cosx+2senx=2

Answer 1

cosx+2senx=2
cosx=2-2senx
cosx=2(1-senx)
cosx/(1-senx)=2
cosx(1+senx)/(1-senx)(1+senx)=2
cosx(1+senx)/(1-sen2x)=2
cosx(1+senx)/(cos2x)=2
(1-senx)(1+senx)/(1-sen2x)=2
1-sen2x/1-sen2x=2
1 no es igual a 2