tg(ABD) = AD/AB = 12/16 = 0,75
th(DBC) = tg(ABD) = 0,75
BC = 8,4/0,75 = 11,2
BE = корень из (11,2*11,2 + 8,4*8,4) = 14
tg(ABD) = AD/AB = 12/16 = 0,75
th(DBC) = tg(ABD) = 0,75
BC = 8,4/0,75 = 11,2
BE = корень из (11,2*11,2 + 8,4*8,4) = 14