Re: solve trig equations
- To: mathgroup at smc.vnet.net
- Subject: [mg125747] Re: solve trig equations
- From: Flavin <flavinj at gmail.com>
- Date: Sat, 31 Mar 2012 03:42:58 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <jl3v0c$3lo$1@smc.vnet.net>
On Mar 30, 4:39 am, Neal Becker <ndbeck... at gmail.com> wrote:
> Solve[{Cos[a]+Cos[b]==x,Sin[a]+Sin[b]==y},{a,b},Reals]
> Solve::nsmet: This system cannot be solved with the methods available to =
Solve. >>
>
> This is a simple enough system, what am I doing wrong?
I don't know why your command doesn't work, but this does.
FullSimplify[Solve[{Cos[a]+Cos[b]==x,Sin[a]+Sin[b]==y},{a,b}],{x\
[Element]Reals,y\[Element]Reals}]