Jawabanmu

2014-03-06T15:16:05+07:00
A. sin 570 = sin 210 = -cos 60 = -1/2 b. cos 225 = -sin 45 = -1/2 √2 c. tan 300 = -tan 60 = -√2
2014-03-06T15:16:48+07:00