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Re: TrigExpand - Odd behavior


Hello Bob,

please compare:

Chop[TrigExpand[Cos[x + N[45*Degree]]]]

with

N[TrigExpand[Cos[x + Pi/4]]]

"45 Degree" by itself simply does not yield the value in radians which 
Cos[ ] requires; N[Degree] does.

Best regards,

MATTHIAS BODE
Torres Sofer III, depto. 9 A
Pedro Borda #1072
esq. Ismael Vásquez
COCHABAMBA/BOLIVIA

CEL: +591-70 71 56 64
TEL/FAX: +591-4-4 53 34 17
LVSABA at HOTMAIL.COM
Time indicated: UTC.

----- Original Message ----- 
From: "Bob Stagat" <stagat at linkline.com>
To: mathgroup at smc.vnet.net
Subject: [mg55438]  TrigExpand - Odd behavior


>
> Try executing the following three lines and explain the last result...
>
> Cos[45 Degree]
>
> Cos[x+45 Degree]
>
> Cos[x+45 Degree]//TrigExpand
>
> Thanks...
> ~ BS ~
>
> 


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