Question

Tg 3п/4 - sin 7п/6 =

Answer 1

$tg \frac{3*pi}{4}-sin \frac{7*pi}{6} =-1-(- \frac{1}{2})=-1+\frac{1}{2}=-0,5$
1) $tg \frac{3*pi}{4}=tg(pi-\frac{pi}{4})=-tg (\frac{pi}{4})=-1$
2) $sin \frac{7*pi}{6}=sin(pi+ \frac{pi}{6})=-sin (\frac{pi}{6})=- \frac{1}{2}$

Answer 2

=tg ( П-П/4) - sin ( П+П/6)=- tgП/4-(-sinП/6)=-1+1/2=-0,5