\[\boxed{\mathbf{432.}}\]
\[1)\sin{3\pi} - \cos\frac{3\pi}{2} =\]
\[= \sin(\pi + 2\pi) - 0 = \sin\pi = 0\]
\[2)\cos 0 - \cos{3\pi} + \cos{3,5\pi} =\]
\[= 1 - \cos\pi + \cos{1,5\pi} =\]
\[= 1 - ( - 1) + \cos\frac{3\pi}{2} =\]
\[= 1 + 1 + 0 = 2\]
\[3)\sin\left( \text{πk} \right) + \cos(2\pi k) =\]
\[= 0 + 1 = 1\]