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koordinat kartesius = [x , y]
mencari r dan α
⇒ mencari r:
r² = x² + y²
r² = (4√3)² + (-4)²
r² = (16 * 3) + 16
r² = 48 + 16
r² = 64
r = √64
r = 8
⇒ mencari α:
tan α = y/x
tan α = -4 / (4√3)
tan α = -√3
α = 120° atau 300°
Maka, koordinat kutubnya adalah (8 , 120°) atau (8 , 300°)
Jika Jawaban di atas membantu, jangan lupa jadikan solusi terbaik ya, terima kasih :)
r = √(4√3)² + (-4)²
= √48+16
= √64
= 8
tanФ = y/x
= -4/4√3
= -√3/3
Ф = 120°
Koordinat kutub : (8,120°)