Jawabanmu

2014-06-05T10:39:24+07:00
R = √(6 + 2) = √8 = 2√2
tan a = y/x = √2 / -√6 = -1/3 √3
a = 150
koordinat kutub (2√2, 150°) 
2014-06-05T15:03:45+07:00
R = √(6 + 2) = √8 = 2√2 tan a = y/x = √2 / -√6 = -1/3 √3 a = 150 koordinat kutub (2√2, 150°)