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 ||
弧(星座)がマカラ(山羊宮)から始まるとき、ブジャー(正弦)にトリジャー(半径)を掛けた値を「ダナ」と呼ぶ。だが半径に応じて所要の補正を施すと、カルカ(蟹宮)以後はコーティ(余弦)の結果となる。
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.