ब्राह्मस्फुटसिद्धान्त (ब्रह्मगुप्त - शून्य, कुट्टक, बीजगणित एवं सम्पूर्ण २१ अध्याय सान्वय सटीक)

308 BRAHMAGUPTA' ASTRONOMY : ITS HIGHLIGHTS
Also MBh. IV. 1; SūSi. II. 29 ; ŚiDVṛ I. ii. 10; SiŚe. iii.
12; SiŚi. I. ii. 18-19 (i).
25. Rule for finding the RSine (Reversed sine) of an arc
(<90°) : BrSpSi II. 10.
Also SūSi. II. 31-32 ; MBh. IV. 3-14; LBh. II, 2 (11)-3 (i);
ŚiDVṛ. I. ii. 12; SiŚe. III. 15; SiŚi. I, ii. 10 (ii)-11.
(We shall discuss it separately in the light of Brahmagupta
formula.)
26. Rule for finding the Sun's equation of the centre:
BrSpSi.. II. 15 (ii);
Also MBh. IV. 4 (ii); . III SiŚe. 27
27. Rule for determining the Sun's true longitude: BrSpSi.
XIV. 17-18.
Also MBh. IV. 21-23; SiŚe. III. 52.
28. Rule for finding the Sun's bhujāntara correction
under the eccentric theory : BrSpSi. XIV. 19.
Also MBh.-IV. 24.
29. Rule for determining the cara-saṁskāra or cara
correction : KK. I. 22.
30. Rule for finding the semi-durations of the day and
night : BrSpSi. II. 60 ; KK. I. 23.
Also SūSi. II. 62-63 ; ŚiDVṛ. I. ii. 20-21 ; SiŚe. III. 70 ;
SiŚi. I. ii. 52.
31. Rule for calculating the tithi : BrSpSi. II. 62 ; KK.
I. 25.
Also SūSi. II. 66 ; ŚiDVṛ I. ii. 22 ; SiŚe. III. 71 ; SiŚi.
I. ii. 66.
32. Rule for calculating the Karaṇa : KK. I. 27.
Also. ŚiDVṛ. I. ii. 24 ; SiŚe. III. 77 ; SiŚi. I. ii. 66.
33. Rule for calculating nakṣatra : BrSpSi. II. 62 ; KK.
I. 24.
Also SūSi. II. 64 ; ŚiDVṛ. I. ii. 23 (i) ; SiŚe. III. 75; SiŚi.
I. ii. 67.
34. Rule pertaining to direct and retrograde motions of
a planet : BrSpSi. II. 50-51.