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Verified answer
Kordinat kutub titik(-1,-√3) adalahx = -1 y = -√3
r = √((-1)²+ (-√3)²)
=√(1+3
=√4
= 2
Tan À = y / x = -√3 / (-1) = √3
Tan À = √3
Tan À = Tan 60
À = 60
Koordinat kutub = ( r, À ) = ( 2, 60)