Question

Сократить дробь:
(sin5x + sin3x)/(cos6x*sin10x-cos10x*sin6x)

Answer 1

$frac{sin5x+sin3x}{sin10xcos6x-cos10xsin6x}=frac{2sinleft(frac{5x+3x}2right)sinleft(frac{5x-3x}2right)}{sin(10x-6x)}=frac{2sin4xsin x}{sin4x}=2sin x$

Answer 2

Спасибо большое