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MathGroup Archive 2006

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Re: Sin[30*Degree] vs Sin[29*Degree]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg72117] Re: Sin[30*Degree] vs Sin[29*Degree]
  • From: "dimitris" <dimmechan at yahoo.com>
  • Date: Wed, 13 Dec 2006 06:38:49 -0500 (EST)

Everything works as desired.

Sin[30*Degree]
Sin[31*Degree]
Sin[29*Degree]

1/2
Sin[31*Degree]
Sin[29*Degree]

Compare with

Sin[30*Degree]//N
Sin[31*Degree]//N
Sin[29*Degree]//N

0.5
0.515038
0.48481

and

Sin[30*Degree]//N[#,40]&
Sin[31*Degree]//N[#,40]&
Sin[29*Degree]//N[#,40]&

0.5000000000000000000000000000000000000000
0.5150380749100542100816319363981382834161
0.4848096202463370290753796224157765682767

Regards
Dimitris


Steven Shippee wrote:
> What is happening here:
>
> Sin[30*Degree]
> Sin[31*Degree]
> Sin[29*Degree]
> which makes it appear that only the first line of input works?
>
> However, if I do something like:
>
> \!\(Sin[\(29*Pi\)\/180. ]\)
>
> I get the expected result ... I'm sure it is me, what am I missing in
that I
> think I am not seeing consistent behavior?
> 
> Thanks in advance,
> 
> Steven Shippee
> 
> slshippee at comcast.net


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