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 ||
যখন ধনু মকর থেকে আরম্ভ হয়, তখন ত্রিজ্যা দ্বারা গুণিত ভুজফলকে ‘ধন’ (versed-sine) বলা হয়। কিন্তু ত্রিজীবার অনুসারে যথোচিত সংশোধন করে কর্ক থেকে পর তা-ই ‘কোটি’ (cosine) ফলরূপে গণ্য হয়॥
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.