Jawabanmu

2014-06-02T21:45:01+07:00
2014-06-02T21:47:42+07:00
1) sin 120 derajat = sin (180 - 120)
= sin 60 = 1/2 akar 3
2) cos 225 derajat = cos (180 + 45)
= - cos 45 = -1/2 akar 2
5 3 5