A History of the Kerala School of Hindu Astronomy (in Perspective) c8.s2.8

c8.s2.8

Acyuta’s formula may be expressed in terms of modern mathematics thus: ‘If *F* is the longitudinal difference between the node and the planet, *w* the maximum latitude and *y* the actual latitude, then, the correction *k*=sin *F*. cos *F* (1−cos *w*) / cos *y*.⁴