ubahlah sudut sudut berikut ke satuan derajat a. 3/5 rad b. 0,54 rad c.2/3 π rad d 7/4 π rad

jawab

π rad = 180°
rad = 180/π

a. 3/5 rad = 3/5 (180 /π) = 108/π° = 108/3,14 = 34.39°

b. 0,54 rad = 0,54 x 180/π = 97,2 /π°  = 97,2/3,14 = 30,96°

c. 2/3 π rad = 2/3 x 180° = 120°

d. 7/4 π rad = 7/4 x 180° =  315°

1 π radian = 180°
1 radian = 180/(22/7) = 57, 6 °
a) 3/5 rad = 3/5 × 57,6° = 40°
b ) 0,54 rad = 0,54 × 57,6° = 31,3°
c) π rad = 180°
2/3 π rad = 2/3 ×180° = 120°
7/4 π rad = 7/4× 180° = 315°