MathGroup Archive 2003

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Magic number 23

  • To: mathgroup at smc.vnet.net
  • Subject: [mg41467] Re: [mg41445] Magic number 23
  • From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
  • Date: Wed, 21 May 2003 08:02:00 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

I just noticed a quicker way:


FullSimplify[TrigFactor[Cos[Pi/8]]]

Sqrt[2 + Sqrt[2]]/2

Andrzej Kozlowski
Yokohama, Japan
http://www.mimuw.edu.pl/~akoz/
http://platon.c.u-tokyo.ac.jp/andrzej/


On Tuesday, May 20, 2003, at 11:03  pm, Andrzej Kozlowski wrote:
>
> You need to direct it a bit.
>
> In[32]:=
> ToRadicals[RootReduce[FullSimplify[TrigToExp[Cos[Pi/8]]]]]
>
> Out[32]=
> Sqrt[1/2 + 1/(2*Sqrt[2])]
>





  • Prev by Date: Re: SelectedNotebook[ ] under Mac OSX gives wrong answer
  • Next by Date: Re-establish link to running Kernel
  • Previous by thread: Magic number 23
  • Next by thread: Re: Magic number 23