In spherical coordinate, the orbital angular momentum operator is given by L=ixp=Fx(-inV) = -ih a 0 Prove 20 sine ap L. = i til, = theto ticot 0- (hint: (1) L, = & . L, L, = y . L, and (2) r = i sin @ cos q + 0 cos Ocos p - @ sing, y = isin @ sing + 0 cos @sino - ocos q)