Berechnen Sie folgende Ausdrücke (mit Hilfe der Additionstheoreme)!
\(\cos(105^{\circ})\) =
\(\sin(105^{\circ})\) =
\(\cos(225^{\circ})\) =
\(\sin(225^{\circ})\) =
\(\cos(225^{\circ})\)
\(\sin(105^{\circ})\)
\(\sin(225^{\circ})\)
\(\cos(105^{\circ})\)
\(- \frac {\sqrt{2}}{2}\)
\(\frac {\sqrt{2}+\sqrt{6}}{4}\)
\(\frac {\sqrt{2}-\sqrt{6}}{4}\)
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