Need help making a complex function work with GH

I am evaluating a complex array of curves to determine an angle based on known lengths. After delving deep into my memory to figure out the trigonometry, I've created a function which, when use with WolframAlpha, gets me the value I want.

Problem is, I think Wolfram is pretty lenient, as it is not really a function which can be plugged into GH easily. I've attached a screenshot of the solution from Wolfram. The actual equation is:

T= sin(2x) * ((W/2cos(x))-S)

Where T,W, and S are known variables. x is the angle I want to feed back into GH and complete the geometry.

Is there a way to get GH to solve this? Do I need to go back and look at my calculus book?

Thanks,

Shane