Neocijenjeno
Jan. 18, 2016, 1:12 a.m. (10 years, 7 months)
Official solution
U paralelogramu ABCD simetrala kuta \sphericalangle DAB raspolavlja dužinu \overline{CD}. Ako sa M označimo polovište dužine \overline{CD}, odredite veličinu kuta \sphericalangle AMB.
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