Question

Doy 20 puntos porfavor es urgente

Answer 1

espero te ayude suerte

Answer 2

${ \frac{ctgx-tanx}{1-tanx} =}\\\\{ \frac{\frac{cosx}{senx}-\frac{senx}{cosx}}{1-\frac{senx}{cosx}}=}\\\\{ \frac{ \frac{cos^2x-sen^2x}{senx.cosx} }{ \frac{cosx-senx}{cosx} } =}\\\\{ \frac{(senx-cosx)(senx+cosx)}{senx.cosx} \times \frac{cosx}{cosx-senx} =}\\\\{\text{simplifico}}\\\\{ \frac{senx+cosx}{senx} =}\\\\{ \frac{senx}{senx} + \frac{cosx}{senx} =}\\\\{1+ctgx=}\\\\{\boxed{ctgx +1}}\\\\{\text{salu2.!! :)}$