Сравни числа

1. \(\sin \left(-\frac{7\pi}{4}\right)\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\tg \frac{7\pi}{4}\) ;

2. \(\ctg \left(-\frac{7\pi}{6}\right)\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\cos \left(-\frac{13\pi}{7}\right)\) .