HP dari persamaan 4sin^2x+6sinx+2=0 !
4sin²x + 6sin x + 2 = 0
sin²x + 6sin x + 8 = 0
(sin x + 4/4)(sin x + 2/4) = 0
sin x + 1 = 0
sin x = -1
x = 270°
sin x + 1/2 = 0
sin x = -1/2
x = 210°
HP: {210°,270°)
sin²x + 6sin x + 8 = 0
(sin x + 4/4)(sin x + 2/4) = 0
sin x + 1 = 0
sin x = -1
x = 270°
sin x + 1/2 = 0
sin x = -1/2
x = 210°
HP: {210°,270°)
sin²x + 6sin x + 8 = 0
(sin x + 4/4)(sin x + 2/4) = 0
sin x + 1 = 0
sin x = -1
x = 270°
sin x + 1/2 = 0
sin x = -1/2
x = 210°
HP: {210°,270°)