Determining weak phases using B->D^*V Decays

We describe how the angular analysis of vector-vector final states in B decays provides theoretically clean techniques for determination of CP violating phases. The quantity ${\sin }^2(2\beta +\gamma )$ can be cleanly obtained from the time dependent study of decays such as B_d(t)->D^{\pm} \rho^\mp, D^{\pm} a_1^{\mp} etc. Similarly, one can use B_s(t)-> D_s^{\pm} K^{\mp} to extract ${\sin }^2\gamma$. A time independent study of the charged decay mode B^\pm-> D^{*0}(\bar D^{0}) K^{\pm} can also be used to extract gamma.