Question

Demostrar que: (tgx + 1) cosx - senx=cosx

Answer 1

Respuesta:

Respuesta:

\begin{gathered} (\tan(x ) + 1) \cos(x) - \sin(x ) = \cos(x) \\ \frac{ \sin(x) \times \cos(x) }{ \cos(x) } + \cos(x) - \sin(x) = \cos(x) \\ \sin(x) + \cos(x) - \sin(x) = \cos(x) \\ \cos(x) = \cos(x) \end{gathered}

(tan(x)+1)cos(x)−sin(x)=cos(x)

cos(x)

sin(x)×cos(x)

+cos(x)−sin(x)=cos(x)

sin(x)+cos(x)−sin(x)=cos(x)

cos(x)=cos(x)