Problem solved by upgrading, thanks.
Mickaël
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Thanks, I'll try that, and come back if I have still this issue with the
8.0.
Still, big problem in the 7.2 ?! Or could it be related to other libraries ?
Mickaël
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Hello,
you might have missed the minus sign and the "it should be positive" in my
post.
Best regards,
Mickaël
On Saturday, September 16, 2017 at 1:33:47 PM UTC+2, David Joyner wrote:
>
> On Sat, Sep 16, 2017 at 7:27 AM, Mickael Pechaud
> > wrote:
> >
Hello,
I'm running SageMath 7.2, on a 64bits laptop with a Ubuntu 16.04.2 LTS
(xenial). I got a wrong answer from cos :
sage: float(cos(14*pi/9))
-0.17364817766693041
It should be positive - and it's inconsistent with the following lines :
sage: float(cos(14*pi/9-2*pi))
0.17364817766693041
