Задание 2. Вычисли без таблиц. 1. \(\sin 120^\circ=\sin(180^\circ-60^\circ)=\) 2. \(\cos 150^\circ=\cos(180^\circ-30^\circ)=\) 3. \(\sin 135^\circ=\sin(90^\circ+45^\circ)=\) 4. \(\cos 120^\circ=\cos(90^\circ+30^\circ)=\) 5. \(\sin 210^\circ=\sin(180^\circ+30^\circ)=\) 6. \(\cos 225^\circ=\cos(180^\circ+45^\circ)=\)

1. \(\sin 120^\circ=\sin 60^\circ=\frac{\sqrt{3}}{2}\).
2. \(\cos 150^\circ=-\cos 30^\circ=-\frac{\sqrt{3}}{2}\).
3. \(\sin 135^\circ=\sin 45^\circ=\frac{\sqrt{2}}{2}\).
4. \(\cos 120^\circ=-\sin 30^\circ=-\frac{1}{2}\).
5. \(\sin 210^\circ=-\sin 30^\circ=-\frac{1}{2}\).
6. \(\cos 225^\circ=-\cos 45^\circ=-\frac{\sqrt{2}}{2}\).

Ответ: \(\frac{\sqrt{3}}{2};\ -\frac{\sqrt{3}}{2};\ \frac{\sqrt{2}}{2};\ -\frac{1}{2};\ -\frac{1}{2};\ -\frac{\sqrt{2}}{2}\).