Sudut 30 derajat 20' 15 jt Jika dikonversi kebentuk radian akan menjadi

30 = 30 x 2 x phi/36
= 30 x 2 x 22/7/360
= 30 x 6,28/360
= 0,5233 radian
20 = 20 x 2 x phi/360
= 20 x 2 x 22/7/360
= 20 x 6,28/360
= 0,3489 radian
15 = 15 x 2 x phi/360
= 15 x 2 x 22/7/360
= 15 x 6,28/360
= 0,2617 radian