This may be a valid view, but, as the late Professor Joad might have said, it all depends on what you mean by “inclination”. As with the orbits of planets around the Sun, as described in Chapter 10, S...This may be a valid view, but, as the late Professor Joad might have said, it all depends on what you mean by “inclination”. As with the orbits of planets around the Sun, as described in Chapter 10, Section 10.2, we take the point of view here that the inclination of the orbital plane to the plane of the sky is an angle that lies between 0∘ and 180∘ inclusive; that is to say, the inclination is positive, and the question of its sign does not arise.
