Question

Simplificar a expressão: $\frac{2.Senx.Cosx-Cosx}{1-Senx+Sen^{2}x - Cos^{2}x}$

Resposta: Cotg x


Alguém pode me ajudar a simplificar essa expressão passo a passo?

Answer 1

Resposta:

well oozes

Explicação passo-a-passo:

em izzard Ann is it just doesn't work on my phone number on a daily dose it was

Answer 2

Resposta:

Sabendo que sen²x +cos²x=1, temos :

$\frac{2senxcosx-cosx}{1-senx+sen^{2}x-cos^{2}x } \\\\cos^{2}x = 1-sen^{2}x\\\\\frac{2senxcosx-cosx}{1-senx+sen^{2}x-(1-sen^{2}x) } \\\\\\\frac{2senxcosx-cosx}{1-senx+sen^{2}x-1+sen^{2}x) } \\\\\\\\\frac{2senxcosx-cosx}{2sen^{2}x-senx } \\\\\\\\\frac{cosx( 2senx-1)}{senx(2senx-1)} \\\\\\\\cotgx$