  We theoretically investigate the apparent contact angle of droplets on liquid
infused surfaces as a function of the relative size of the wetting ridge and
the deposited droplet. We provide an intuitive geometrical interpretation
whereby the variation in the apparent contact angle is due to the rotation of
the Neumann triangle. We also derive linear and quadratic corrections to the
apparent contact angle as power series expansion in terms of pressure
differences between the lubricant, droplet and gas phases. These expressions
are much simpler and more compact compared to those previously derived by
Semprebon et al. [Soft Matter, 2017, 13, 101-110].
