Math Help - inequality

1. inequality

$

\frac{{\cos x(\sin (y - x))}}{{y - x}} \ge \frac{{\sin y}}{y}\quad \quad \quad ,\pi \ge y \ge 2x \ge 0

$

2. Try re-typing your problem. It makes no sense right now. I noticed some duplicate braces in your LaTeX code. Try eliminating those.