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MathGroup Archive 2006

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Re: General--Another Trigonometric Problem....NEED HELP

  • To: mathgroup at smc.vnet.net
  • Subject: [mg71083] Re: General--Another Trigonometric Problem....NEED HELP
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Wed, 8 Nov 2006 06:13:25 -0500 (EST)
  • Organization: The Open University, Milton Keynes, UK
  • References: <eijobs$l9v$1@smc.vnet.net>

srj6 at hotmail.com wrote:
> I'm trying to compute this following eq....
> 
> a*sin(x) + b*cos(x) = c
> 
> I did ------>    Solve[a*sin[x] + b*cos[x] = c, x]
> 
> But it doesn't work. Can anyone please tell me how to get he value of that angle 'x'...??

Either of the following expressions will work (note the capitalization 
of built-in function and the double equal sign)

Solve[a*Sin[x] + b*Cos[x] == c, x]

Reduce[a*Sin[x] + b*Cos[x] == c, x]

Regards,
Jean-Marc


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