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MathGroup Archive 2005

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Re: Simplifying ArcTan

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55542] Re: [mg55526] Simplifying ArcTan
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Tue, 29 Mar 2005 03:42:27 -0500 (EST)
  • Reply-to: hanlonr at cox.net
  • Sender: owner-wri-mathgroup at wolfram.com

{Cos[Pi/2],Tan[Pi/2]}

{0,ComplexInfinity}

Simplify[ArcTan[Cos[x],Sin[x]],0<=x<Pi/2]

x


Bob Hanlon

> 
> From: "fizzy" <fizzycist at knology.net>
To: mathgroup at smc.vnet.net
> Date: 2005/03/28 Mon AM 02:42:04 EST
> To: mathgroup at smc.vnet.net
> Subject: [mg55542] [mg55526] Simplifying ArcTan
> 
> 
> Why does   FullSimplify[ ArcTan[ Cos[x], Sin[x] , x>=0 && x <= Pi/2 ]
> not output  x ?
> 
> 
> Thanks...jerry blimbaum
> 
> 

Bob Hanlon
Chantilly, VA


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