A) hasil dari 225°=......putaran B)besar sudut 150°=.... radian C) Nilai cos dari 330°=.....

1 putaran = 360 derajat

225/ 360 = 5 / 8 putaran

i rad = 180 / phi
1 d = phi / 180

150 d = 15/18 x phi

cos 330 = cos 360-30 = cos 30 = 0.5 akar 3

a) 1 putaran = 360drjt
225 = 225/360 putaran = 15/24 putaran = 5/8 putaran
b) 1 rad = 180/phi
150drjt = 150/180 x phi rad = 5/6x3,14 = 15,7/6 = 2,617 rad
c) cos 330 = cos 360-cos30 = 1-1/2akar3