As shown in the figure, in the RT triangle ABC & nbsp;, the angle c = 90 °, AC = 3, BC = 4, a straight line & nbsp; l intersects with the edge BC and Ba and points & nbsp; E and f respectively, and the area of the divided triangle ABC & nbsp; is two equal parts, then the minimum length of the segment EF & nbsp; is______ ．

As shown in the figure, in the RT triangle ABC & nbsp;, the angle c = 90 °, AC = 3, BC = 4, a straight line & nbsp; l intersects with the edge BC and Ba and points & nbsp; E and f respectively, and the area of the divided triangle ABC & nbsp; is two equal parts, then the minimum length of the segment EF & nbsp; is______ ．

We're going to get the following results from the pypythatheorem: ab | ab | = 5, | s \124; ABC = 12 | BC | | AC | AC | AC = 3, ACAC | AC = 3, | BC | BC | BC = 4, | BC | 4 = 4, | 4 \| 4 = 4, and according to the PYU theorem, we get the following results from the pybe: let let let be be = x, | BF | BF | BF | BF = y = y, \\\| s | s | s | s | bef = 12 | 12 | 12 | 12; = y, CoSb = | BC |