Выполни задание

Упрости выражение:

1. \(\dfrac{\cos (60\degree -\alpha)- \sin (30\degree -\alpha)}{\cos (30\degree + \alpha)-\sin (60\degree +\alpha)}\) ;

2. \(\dfrac{\cos 58\degree \sin 14\degree +\sin 58\degree \cos 14\degree}{\cos 35\degree \cos 37\degree -\sin 35\degree \sin 37\degree}\) .