Problem: Find a uniformly valid approximation to the solution of $\epsilon y''-2 tan(x) y'+y=0$ with boundary conditions $y(-1)=0, y(1)=1$ in the limit $\epsilon = 0$. Use only the variables and constants given in the problem; do not define additional constants. Place your final solution in a $\boxed{}$ LaTeX environment.
Solution: $\boxed{y = \sqrt{\frac{\sin x}{\sin 1}}}$