\[\boxed{\mathbf{969.}}\]
\[1)\cos{4,81} = 0,09745\ldots \approx 0,1\]
\[2)\cos{45{^\circ}12^{'}} = 0,70463\ldots \approx 0,7\]
\[3)\cos{\frac{10}{7}\pi} =\]
\[= - 0,22252\ldots \approx - 0,22\]
\[4)\sin{\frac{19}{9}\pi} = 0,34202\ldots \approx 0,34\]