Diketahui 2π radian=360°. Sudut 7/6π radian sama dengan....

phi = 180°

7/6 phi
= 7/6 * 180
= 7 * 30
= 210°

2 pi radian = 360°
pi radian = 360/2 = 180
7/6 pi radian = 7/6 x 180
= 210°