User:TASDELEN

When estimating the perimeter of the ellipses,an overall error % is to be considered. For the whole range of (b/a=TAN),that is (1<TAN<infinity),the world known,recorded maximum error %=0,00145.... On 2009.01.15 this record is corrected,updated to be error %=-0,00000262... This why,the approximations of Ramanujan are no more valid when TAN>2,75 Ref: iaeng conference book/San Francisco/2008/page 944