Выбери верные ответы

1. \(\sin (270\degree + 45\degree) - \cos(720\degree + 30\degree) = \) [ \(\sqrt5\) | \(\dfrac{-(\sqrt2+\sqrt3)}{2}\) | \(\sqrt2+\sqrt3\) ].
2. \(\cos(540\degree + 60\degree) - \tg(180\degree + 45\degree) = \) [ \(\sqrt5\) | \(-1,5\) | \(2,5\) ].
3. \(\sin(270\degree+30\degree) - \sin(360\degree + 60\degree) = \) [ \(-\sqrt3\) | \(\dfrac{-\sqrt2+\sqrt3}{2}\) | \(1,5\) ].