Выбери верные ответы

Сравни:

1. \(\cos 40\degree\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\sin 240\degree\) ;

2. \(\tg 160\degree\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\ctg (-160\degree)\) ;

3. \(\sin \dfrac{17\pi}{10}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\cos \dfrac{3\pi}{10}\) ;

4. \(\tg 5\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\sin 2,5\) .