Монгол Бодлогын Сан

$\left\{ % \begin{array}{l} 2^{\sin x+\cos y}=1 \\ 9^{\sin^2x+\cos^2y}=3 \\ \end{array} % \right.$ систем

$x=(-1)^{k}\dfrac{\pi}{\fbox{a}}+\pi k, y=\pm \dfrac{2\pi}{\fbox{b}}+2\pi k, k\in \mathbb Z,$

$x=(-1)^{m+1}\dfrac{\pi}{\fbox{c}}+\pi m, y=\pm \dfrac{\pi}{\fbox{d}}+2\pi m, m\in \mathbb Z$ шийдтэй.