Trigonometria Exemplos

$\frac{\sin (x)}{\cos (x) + 1} \cdot \frac{\cos (- 1)}{\cos (x) - 1}$

Etapa 1

Multiplique $\frac{\sin (x)}{\cos (x) + 1}$ por $\frac{\cos (- 1)}{\cos (x) - 1}$ .

$\frac{\sin (x) \cos (- 1)}{(\cos (x) + 1) (\cos (x) - 1)}$