$\sin ^{2}\left(\alpha-150^{\circ}\right)-\cos ^{2}\left(300^{\circ}-\alpha\right)-\sqrt{3} \sin \alpha \cos \alpha$
$\sin ^{2}\left(\alpha-150^{\circ}\right)-\cos ^{2}\left(300^{\circ}-\alpha\right)-\sqrt{3} \sin \alpha \cos \alpha$
35
punti
Livello 0
12873
punti
Livello 7