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Verified answer
Bab Koordinat KutubMatematika Matematika SMA Kelas X
x = r . cos α
= -8 . cos (π/6)
= -8 . 1/2 √3
= -4√3
y = r . sin α
= -8 . sin (π/6)
= -8 . 1/2
= -4
(x, y) = (-4√3, -4)