1 | initial version |
I can not reproduce your computation (the definition of s
seems uncomplete), but you should notice that -8e-202
is extremly small (in particular, the first 200 digits of s
and N(sin(50/180*pi)-s,digits=200)
are equal).
If you want a result with an explicit bound on the error, you should probably use RealBallField
or RealIntervalField
.