\[\boxed{\mathbf{966.}}\]
\[1)\sin\frac{\pi}{4} \bullet \cos\frac{\pi}{4} - \sin\frac{\pi}{3} \bullet \cos\frac{\pi}{6} =\]
\[= \frac{\sqrt{2}}{2} \bullet \frac{\sqrt{2}}{2} - \frac{\sqrt{3}}{2} \bullet \frac{\sqrt{3}}{2} = \frac{2}{4} - \frac{3}{4} =\]
\[= - \frac{1}{4} = - 0,25\]
\[2)\ 2\ tg^{2}\frac{\pi}{3} - ctg^{2}\frac{\pi}{6} - \sin\frac{\pi}{6} \bullet\]
\[\bullet \cos\frac{\pi}{3} = 2 \bullet \left( \sqrt{3} \right)^{2} - \left( \sqrt{3} \right)^{2} -\]
\[- \frac{1}{2} \bullet \frac{1}{2} =\]
\[= 2 \bullet 3 - 3 - \frac{1}{4} = 3 - \frac{1}{4} = 3 -\]
\[- 0,25 = 2,75\]