BHRMAGUPTHA.........

                   BRAHMAGUPTHA

BRAHMAGUPTA -Indian Mathematicians And Their Contributions * Brahma Gupta was born in 598A.D in Pakistan. * He gave four methods of multiplication. * He gave the following formula, used in G.P series a + ar + ar2 + ar3 +……….. + arn-1 = (arn-1) ÷ (r – 1) * He gave the following formulae : Area of a cyclic quadrilateral with side a, b, c, d= √(s -a)(s- b)(s -c)(s- d) where 2s = a + b + c + d Length of its diagonals = bio1 2 Indian Mathematicians And Their Contributions