सिद्धान्तशिरोमणि: गणिताध्याय (भास्कराचार्य - ग्रहगणित, मध्यमाधिकार व स्पष्टाधिकार सटीक)

132 generally a small quantity M₂N₂ is taken to be equal to PN₁. If, however, this approximation is not made, PN₁= (M₁N₂ × E₁P) / (E₁ M₂) (by the similarity of the triangles E₁ PN₁ and E₁ M₂ N₂) so that the actual equation of centre is (r / R) H sin E₂ × (R / K) = (r / R) H Sin E₂ where K = Mandakarna E₁ M₂. As M₂ moves from A₂ to P₂, the equation of centre as given by (1) gradually increases from Zero to a maximum r when E₂ = 90° and decreases from this maximum to Zero when E₂ = 180°. Thus from what was noticed from the tabulated differences between the computed mean positions and observed true positions, the fact that those differences vanish at A₂ as well as P₂ the diametrically opposite point of the Mandoccha (not called Sīghroccha, for this word Sīghroccha will be seen to have altogether a different connotation) was verified. The maximum