Trigonometri Contoh

$\frac{\sin (x)}{1 + \sin (x)} - \frac{\sin (x)}{1 - \sin (x)} = 2 \tan^{2} (x)$

Langkah 1

Persamaan yang disediakan bukan identitas.

$\frac{\sin (x)}{1 + \sin (x)} - \frac{\sin (x)}{1 - \sin (x)} = 2 \tan^{2} (x)$ bukan identitas