  Specific models of supersymmetry breaking predict relations between the
trilinear and bilinear soft supersymmetry breaking parameters A_0 and B_0 at
the input scale. In such models, the value of tan beta can be calculated as a
function of the scalar masses m_0 and the gaugino masses m_{1/2}, which we
assume to be universal. The experimental constraints on sparticle and Higgs
masses, b to s gamma decay and the cold dark matter density Omega_{CDM} h^2 can
then be used to constrain tan beta in such specific models of supersymmetry
breaking. In the simplest Polonyi model with A_0 = (3 - sqrt{3})m_0 = B_0 +
m_0, we find 11 < tan beta < 20 (tan beta ~ 4.15) for mu > 0 (mu < 0). We also
discuss other models with A_0 = B_0 + m_0, finding that only the range -1.9 <
A_0/m_0 < 2.5 is allowed for mu > 0, and the range 1.25 < A_0/m_0 < 4.8 for mu
< 0. In these models, we find no solutions in the rapid-annihilation `funnels'
or in the `focus-point' region. We also discuss the allowed range of tan beta
in the no-scale model with A_0 = B_0 = 0. In all these models, most of the
allowed regions are in the chi - stau_1 coannihilation `tail'.
