Astronomy in India — Formula Sheet
CBSE · Class 11 · Knowledge Traditions and Practices of India
7 formulas from Astronomy in India (CBSE Class 11 Knowledge Traditions and Practices of India) on one page, grouped by topic.
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Formulas and Key Relations
Indian calendar and time units
Sidereal period of moon = 27.3 days
Orbital period of moon seen from Earth = 29.5 days
Solar year ≈ 365.25 days
Lunar year ≈ 354 days
Extra month needed about every 3 years
Mathematics linked to astronomy
√10 = 3.162277 as approximation for pi
pi to four decimal places = 3.1416
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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