I type in
hld01[θ_] = (Cos[θ] Subscript[r, Ty])/(Square[Sin[θ]] Square[ Sqrt[Square[Csc[θ]] Square[Subscript[r, Ty]]]])
and wanted Mathematica to simplify, but it doesn't. I tried
Simplify and get the same result. "Clearly" is should be able to simplify
Sqrt[Square], right? How to get Mathematics to simplify this expression?