Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
त्रिज्याभ्यस्तं भुजफलं मकरादौ धनं स्मृतम् । संशोध्यं तु त्रिजीवायां कर्कादौ कोटिजं फलम् ॥ १०९ ॥
trijyābhyastaṃ bhujaphalaṃ makarādau dhanaṃ smṛtam | saṃśodhyaṃ tu trijīvāyāṃ karkādau koṭijaṃ phalam || 109 ||
当弧段/星宫自摩羯(Makara,摩羯座)起算时,bhujā(正弦)与 trijyā(半径)相乘之值称为“dhana”。但依半径作必要校正后,自巨蟹(Karka)起则成为 koṭi(余弦)的结果。
Sanatkumara (teaching Narada in a technical/śāstra context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It shows that the Purana preserves śāstric precision alongside dharma—accurate Jyotiṣa/gaṇita supports correct timing and understanding of sacred duties, which in turn aids disciplined living oriented toward mokṣa.
Indirectly: by grounding religious life in accurate computation (for calendrical and astronomical determinations), it safeguards proper observance of vrata and worship schedules that support steady Vishnu-bhakti in practice.
Jyotiṣa (Vedāṅga) with gaṇita: the relationship between jīvā/bhujā (sine), koṭi (cosine), and trijyā (radius), including sign/quarter-based usage from Makara and Karka.