Apologies the ##\sin^{\pm i\lambda}## is incorrect and meant to say ##\sin^{\pm i\varphi}## and yes I have taken eigenvectors before, just not one similar to this.
Homework Statement
I have a spin operator and have to find the eigenstates from it and then calculate the eigenvalues.
I think I managed to get the eigenvalues but am not sure how to get the eigenstates.Homework Equations
The Attempt at a Solution
I think I managed to get the eigenvalues out...