trying to get numerical answer for a variable equation

Zarc=([(Z*(Zarc*(tan(ThetaR1))))/((8.2+((x-1)*0.05))-(Zarc(tan(ThetaR1))))])

This is my equation and I am trying to use code to find out what the variable is for Zarc. I am tyring to intergrate it but having multiple errors come up. Needs to be in the form of a loop i know.

Thanks,

Amanda

[John D'Errico]

Please don't add an answer for every comment you make. Add them as comments.

[Amanda Kincketootle]

sorry I'm new to this

Answer 1

[Walter Roberson]

syms Zarc Z ThetaR1 x 
solve(Zarc==(((Z*(Zarc*(tan(ThetaR1))))/((8.2+((x-1)*0.05))-(Zarc*(tan(ThetaR1)))))),Zarc)

[John D'Errico]

Amanda said:

"I don't have the symbolic math toolbox"

[Walter Roberson]

There are two solutions for Zarc:

1. 0
2. (x - 20*Z*tan(ThetaR1) + 163)/(20*tan(ThetaR1))

You could also use something like fzero:

fzero( @(Zarc) (((Z*(Zarc*(tan(ThetaR1))))/((8.2+((x-1)*0.05))-(Zarc*(tan(ThetaR1)))))) - Zarc, SomeInitialGuess)