  We investigate the weak decays of $B_c$ mesons in Cabibbo-Kobayashi-Maskawa
favored and suppressed modes. We present a detailed analysis of the $B_c$ meson
decaying to vector meson (V) and axial-vector meson (A) in the final state. We
also give the form factors involving $B_c \to A$ transition in the
Isgur-Scora-Grinstein-Wise II framework and consequently, predict the branching
ratios of $B_c \to V A$ and $AA$ decays.
