Выбери верные ответы

1. \(\sin x=1\) , \(x=\) [ \(\frac{\pi}{2}\) | \(\frac{\pi}{2}+2\pi n\) | \(\frac{\pi}{2}+\pi n\) ];
2. \(\cos x=-1\) , \(x=\) [ \(2\pi+2\pi n\) | \(\pi+2\pi n\) | \(\frac{\pi}{2}+2\pi n\) ];
3. \(\tg x=0\) , \(x=\) [ \(2\pi n\) | \(\pi n\) | \(\frac{\pi}{2}+2\pi n\) ];
4. \(\ctg x=0\) , \(x=\) [ \(2\pi+2\pi n\) | \(\frac{\pi}{2}+\pi n\) | \(\frac{\pi}{2}+2\pi n\) ].