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

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