Задание
Выполни задание
Упрости выражение:
\(\dfrac{\sin (30\degree+ \alpha) \,-\, \cos (60\degree+ \alpha)}{ \sin (30\degree+ \alpha) \,+\, \cos (60\degree+ \alpha)}\) ;
\(\dfrac{ \cos 63\degree \cos22\degree \,+\, \sin 63\degree \sin 22\degree}{ \sin 16\degree \cos 25\degree \,+\, \cos 16\degree \sin 25\degree}\) .