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.