1. The problem statement, all variables and given/known data Set |Ψ> = (1/√ 2) | ↑, z> + (eiθ / √ 2) | ↓, z>. Find the probability of measuring the spin component of sz to be up the z-axis. Find the probability of measuring the spin component of sx to be up the x axis. 2. Relevant equations I'm not sure. 3. The attempt at a solution I think I have to find the projection along each axis in the required direction and then multiply by the complex conjugate. How would I go about finding a projection? Also, I have an equation for <sz>. Is this the same as finding the probability of spin up the z-axis?