Mathematics in Ancient and Medieval India c8.214

c8.214

From the *Jyā* values of 45° and 30°, the *Jyā* values of 22°30', 15° and then 11°15', 7°30' and 3°45' can be gradually calculated with the help of the formulae (1) and (3). The values of the *Jyā* of the complementary angles vis. 67°30', 75°, 78°45', 82°30', 86°15' can be calculated by (2). The *Jyā* of half of these angles and again complements of these angles are calculated. By repeating this process, 24 *Jyās* at the intervals of 3°45' can be easily calculated.