cosx = √3sinx ,untuk 0 ≤ x ≤ 2π pakai cara

Bab Trigonometri
Matematika SMA Kelas X

cos x = √3 . sin x
sin x / cos x = 1/√3
tan x = (1/3) √3
x = π/6 atau 7π/6

HP = { π/6, 7π/6 }