MathGroup Archive 2011

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

Search the Archive

Re: Simplify[ArcTan[Tan[a] + Tan[b]]]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg120508] Re: Simplify[ArcTan[Tan[a] + Tan[b]]]
  • From: Jay Bee <jiri.bocan at gmail.com>
  • Date: Wed, 27 Jul 2011 06:10:42 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <j0jk6s$ovj$1@smc.vnet.net>

Since
tg(a) + tg(b) = sin(a+b)/[cos(a)*cos(b)] = tg(a+b)*[1-tg(a)*tg(b)] =
[tg(a)*tg(b)]*[cotg(a) + cotg(b)]
maybe Mathematica is right...




  • Prev by Date: Path variable
  • Next by Date: Re: And now for something completely different
  • Previous by thread: Re: Simplify[ArcTan[Tan[a] + Tan[b]]]
  • Next by thread: And now for something completely different