Solving for $z$ in $x=frac y{2 tan(z/2)}$
up vote
0
down vote
favorite
1
I'm trying to solve for $z$ given $x=dfrac y{2 tan(z/2)}$ . Wolfram Alpha gives me the solution, but when I plug the formula into Excel it's not giving expected results at all - if I plug the same $x$ value into the formula it does not give me the $z$ that I originally started with. Hopefully that's enough information to go off of; normally I frequent Stackoverflow. Thanks!
trigonometry
share | cite | improve this question
edited 2 days ago
amWhy
191k 27 223 438
asked 2 days ago
...