Trigonometri Contoh

$\cos^{2} (2 x) - \cos^{2} (6 x) = \sin (4 x) \sin (8 x)$

Langkah 1

Gambarkan masing-masing sisi persamaannya.

$y = \cos^{2} (2 x) - \cos^{2} (6 x)$

$y = \sin (4 x) \sin (8 x)$

Langkah 2