Рассмотри рисунок и заполни пропуски

\(sin \dfrac {\pi}{6}\) [ ] \( 0 \) ;

\(cos \dfrac {\pi}{3}\) [ ] \( 0 \) ;

\(tg (-\dfrac {\pi}{6})\) [ ] \( 0 \) ;

\(sin \dfrac {7\pi}{6}\) [ ] \( 0 \) ;

\(sin \dfrac {2\pi}{3}\) [ ] \( 0 \) ;

\(ctg (-\dfrac {\pi}{4})\) [ ] \( 0 \) .