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\(\cos (180\degree - 45\degree) + \sin (270\degree + 60\degree) = \) [ \(\sqrt2\) | \(-\dfrac{(\sqrt2+1)}{2}\) | \(1\) ].

\(\sin (270\degree + 30\degree) + \tg(270\degree - 45\degree) + \sin (450\degree - 30\degree) = \) [ \(\sqrt2\) | \(-\dfrac{(\sqrt2+1)}{2}\) | \(1\) ].

\(\sin (90\degree + 60\degree) - \tg(450\degree + 45\degree) - \sin (360\degree + 30\degree) = \) [ \(\sqrt2\) | \(-\dfrac{(\sqrt2+1)}{2}\) | \(1\) ].