[en] We have performed spectral analyses of spin-torque ferromagnetic resonance (ST-FMR) signals in both Ni_8_0Fe_2_0/Ta and Co_4_0Fe_4_0B_2_0/Ta bilayers and compared the spin Hall angles of these signals. We found that the contribution of the inverse spin Hall effect to the total signal in ST-FMR measurements is marked particularly in the case of Co_4_0Fe_4_0B_2_0/Ta bilayers, because the anisotropic magnetoresistance effect in Co_4_0Fe_4_0B_2_0, i.e., the origin of the ST-FMR signal, is much smaller than that in Ni_8_0Fe_2_0. When we take into account the contribution of the inverse spin Hall effect, the spin Hall angle of Co_4_0Fe_4_0B_2_0/Ta decreases to less than half of that estimated by conventional ST-FMR spectral analysis. (author)