Prakalkulus Contoh

$\frac{1}{\cot (A) + \cot (C)} = \frac{\sin (A) \cdot \sin (C)}{\sin (B)}$

Langkah 1

Persamaan yang disediakan bukan identitas.

$\frac{1}{\cot (A) + \cot (C)} = \frac{\sin (A) \cdot \sin (C)}{\sin (B)}$ bukan identitas