Jan 3, 2021 #2 skeeter Well-known member MHB Math Helper Mar 1, 2012 765 What makes you think a closed-form solution for y can be found?

Jan 4, 2021 #3 C Country Boy Well-known member MHB Math Helper Jan 30, 2018 580 Replacing \(\displaystyle sin(y)\) by \(\displaystyle \frac{e^{iy}- e^{-iy}}{2i}\) you might be able to get a solution in terms of the "Lambert W function" https://en.wikipedia.org/wiki/Lambert_W_function.

Replacing \(\displaystyle sin(y)\) by \(\displaystyle \frac{e^{iy}- e^{-iy}}{2i}\) you might be able to get a solution in terms of the "Lambert W function" https://en.wikipedia.org/wiki/Lambert_W_function.