November 2018 2 26 Report
Hej, mam udowodnić równanie:

( \frac{sin \alpha +tg \alpha }{ \frac{1}{sin \alpha }+ \frac{1}{tg \alpha } } ) ^{2} = \frac{sin^2 \alpha+tg^2 \alpha }{ \frac{1}{sin^2 \alpha }+ \frac{1}{tg^2 \alpha } }

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