Question

1. ubahlah sudut-sudut berikut dalam radian
a. 15°
b. 60°
c. 48°
d. 180°
e. 315°

Answer 1

Materi : Matematika
Kelas : X
Bab : Trigonometri

Pembahasan :

Derajat ke radian
A/180° x π

Radian ke derajat
A/π x 180

a) 15°
15/180 x π
= 1/12 x π
= π/12

b) 60°
60/180 x π
= 1/3 x π
= π/3

c) 48°
48/180 x π
= 4/15 x π
= 4π/15

d) 180°
180/180 x π
= π

e) 315°
= 315/180 x π
= 7/4 x π
= 7π/4