" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Mapel : Matematika PeminatanKelas : XI SMA
Materi : Persamaan Trigonometri
Pembahasan :
Batas Interval
0° < x < 2π
2Cos²x - 3Cos x + 1 = 0
(2Cos x - 1)(Cos x - 1) = 0
Cos x = 1/2
Cos x = Cos 60° , Cos 300°
x = 60° , 300°
x = 1/3π , 5/3π
Cos x = 1
Cos x = Cos 0° , Cos 360°
x = 0° , 360° (Tidak memenuhi)
Hp : {1/3π , 5/3π}