vec_anglesin_deriv
vec_anglesin_deriv(A_expansion, B_expansion, order, unitized=False, return_unit_vectors=True, planar=None, up_vector=None, component_vectors=None, unit_expansions=None, planar_threshold=1e-14):
vec_anglesin_deriv(A_expansion, B_expansion, order, unitized=False, return_unit_vectors=True, planar=None, up_vector=None, component_vectors=None, unit_expansions=None, planar_threshold=1e-14):