September 2018 1 57 Report

dany jest trojkat prostokatny abc w ktorym kat c=90, taki ze cos BAC=\frac{\sqrt{21}}{5} oraz |AC|=4. oblicz pole i obwod kola opisanego na tym trojkaie.

odp:

p=4 16/21 pi

obw=20√(21) przez 21 pi


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