tentukan koordinat kutub jika koordinat kartesiusnya P(-1:√3)!

langsung aja ya

r^2 = (-1)^2 + (akar3)^2
r^2 = 1 + 3
r^2 = 4
r = akar4
r = 2

misal sudutnya @
(x negatif, y positif => @ di kuadran 2)

tan@ = y/x
tan@ = akar3/-1
tan@ = -akar3
tan@ = tan120°
@ = 120°

jd koordinat kutubnya
(2, 120°)

Bab Trigonometri
Matematika SMA Kelas X

P(-1, √3) → x negatif dan y postif di kuadran II
r = √(x² + y²)
r = √((-1)² + √3²)
r = √(1 + 3)
r = 2

cos α = x/r
cos α = -1/2
α = 120°

(2, 120°)