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Topic: 3 equation of cosine law
Replies: 8   Last Post: Apr 2, 2013 6:34 PM

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 Torsten Posts: 1,631 Registered: 11/8/10
Re: 3 equation of cosine law
Posted: Mar 25, 2013 4:30 AM

"DHAAH JOHARI" wrote in message <kik48r\$k5a\$1@newscl01ah.mathworks.com>...
> > I think you want to use "cosd" instead of "cos" in your equations.
> >
> > Best wishes
> > Torsten.

>
> Thanks Torsten..thank you very much!
> but I still didn't get the answers,..
> It said error..i don't know how to fix it
>
> syms xyz
> solutions = solve('x^2 = y^2+233600-966.64*y*cosd(z-65.56) ',' x^2 = y^2+155600-788.92*y*cosd(z-59.53)','x^2 = y^2+97600-624.82*y*cosd(z-50.19)')
> [solutions.x solutions.y solutions.z]

I think cosd does not accept symbolic arguments.
Convert 65.56°, 59.53° and 50.19° to radians and try again.
And define
syms x y z
syms xyz

Best wishes
Torsten.

Date Subject Author
3/22/13 Torsten
3/25/13 Torsten
3/28/13 Torsten
3/28/13 Roger Stafford
4/2/13 Guest
4/2/13 Roger Stafford