Mathematics in Ancient and Medieval India c8.s3.59

c8.s3.59

.\sin\ \theta = \theta\ - (\theta³)/(3!) + (\theta⁵)/(5!) - (\theta⁷)/(7!) + (\theta⁹)/(9!) - \ ... / \cos\ \theta = 1\ - (\theta²)/(2!) + (\theta⁴)/(4!) - (\theta⁶)/(6!) + (\theta⁸)/(8!) - \ ... } ...\ (3)