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I) x = r . cos α
x = 4 . cos 60
x = 4 . 1/2 = 2
II) y = r . sin α
y = 4 . sin 60
y = 4 . 1/2√3 = 2√3
Jadi, jawabannya (2,2√3)
r = 4
θ° = 60°
Maka :
x = r.cos θ° y = r.sin θ°
x = 4.cos 60° y = 4.sin 60°
x = 4.1/2 y = 4.1/2√3
x = 2 y = 2√3
Jadi koordinat kartesius dari titik P(4,60°) adalah titik P = (2,2√3)