undefined function or variable 'th14'

hi, i am new in matlab i have a problem with finding 'th14' can u help me please? it say * 'Undefined function or variable 'th14''. *
  • for i=1:1:360
th12=i/deg;
tth12(i)=th12; % tth12(i) indicates the i‟th element of the array.
th14=-1*(atan((0.08*cos(th12)-0.18-0.05*cos(th14))/(0.08*sin(th12)-0.05*sin(th14))));
tth14(i)=th14;*

 采纳的回答

th14=-1*(atan((0.08*cos(th12)-0.18-0.05*cos(th14))/(0.08*sin(th12)-0.05*sin(th14))));
This is the line where th14 is defined, but the right hand side is attempting to use th14 which does not exist since it has not been defined yet.

2 个评论

but this is the only function to find th14 so is there any way to define as symbol or sth to solve the equation?
syms th14
would define it as a symbol.

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