Question

Nyatakan sudut berikut dalam radian :
a.1/6 putaran
b.2/3 putaran
c.1/5 putaran
d.5/4 putaran

Answer 1

Sudut dalam radian adalah 1 putaran = 2π rad
Sehingga:
a.)
1/6 putaran = 1/6 x 2π rad
1/6 putaran = 1/3 π rad
b.)
2/3 putaran = 2/3 x 2π rad
2/3 putaran = 4/3 π rad
c.)
1/5 putaran = 1/5 x 2π rad
1/5 putaran = 2/5 π rad
d.)
5/4 putaran = 5/4 x 2π rad
5/4 putaran = 5/2 π rad

Answer 2

Ingat 1 putaran 360 derajat
1 ° =

a.1/6 putaran = 1/6 .360 = 60 derajat
60 ° =  60° X =

b.2/3 putaran= 2/3 . 360° = 240 °
240 ° = 240° X =

c.1/5 putaran = 1/5 * 360 ° = 72 °
72° = 72° * = 

d.5/4 putaran = 5/4 * 360 ° = 450 °
450 ° = 450 ° X =