Mathcad Solve Block Question

[Muttzy]

I am trying to solve for rho that is on both sides of the equation - shown below.

rho = tan(rho)*[0.5+(pi-beta)*cot(beta)]

Beta is a function of theta - theta is my variable. I know what rho should equal for given values of theta but when I run the program I do not get the desired result.

Am I approaching this problem wrong and do you have any recommendations?

I have attached the program below.

 

[IRstuff]

Your guess value for rho is too far away. However, I still don't get the values you have in your table. Did you try to calculate them directly; they're close, but not nearly identical

TTFN
faq731-376

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[Muttzy]

The values in the table are from the ASME code. The code has a second equation that is best fit curve of the formula I am trying to solve. The values from that best fit curve are those in the table. They will not be exact. I have attached the mathcad file again but this time included the best fit curve equation.

I am trying to find the exact value. I think the way around my problem is to use the best fit curve equation as the guess value. That update is also included in the mathcad file attached.

Thanks IRstuff, you helped me answer my question.