Trigonometri Contoh

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

Langkah 1

Persamaan yang disediakan bukan identitas.

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