A command to line-of-sight (CLOS) guidance law is derived via right inversion. This CLOS guidance law achieves the same objective as that given by Ha and Chong via feedback linearization [1] yet is considerably simpler than that in [1] and does not rely on [1, Assumption 3]. These advantages are made possible by reformulating the original nonlinear tracking Problem as a right inversion problem for a linear time-varying system, and by making use of the orthogonal property of a rotational matrix.