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Matematická úloha
Vypočítej:
\( \large -\cos 180\degree + \cos 45\degree - \sin 90\degree + \cotg 45\degree + \sin 270\degree \)
\( \large \Large -1\large \)
\( \large \Large \frac{1}{2}\large \)
\( \large \Large 0\large \)
\( \large \Large \frac{\sqrt {2}}{2}\large \)