1)Sin x =1/2

2)sin x = -1/2

3)cos x =1/2

4)cos x = -1/2

5)Sin x =√2/2

6)sin x = -√2/2

6)cos x =√2/2

7)cos x =-√2/2

8)sin x =-√3/2

9)sin x =√3/2

10)sin x =√3/2

11)cos x = √3/2

12)cos x= -√3/2