Выполни задание

Запиши в виде произведения:

а) \(\sin110\degree + \sin50\degree = \) [ ];

б) \(\sin110\degree - \sin50\degree = \) [ ];

в) \(\cos110\degree + \cos50\degree = \) [ ];

г) \(\cos110\degree - \cos50\degree = \) [ ].