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θ = 120°
ditanya : Fx = .... ? Fy = .... ?
dijawab :
Fx = F cos θ
= 20 x cos 120°
= 20 x (-1/2)
Fx = -10 N
Fy = F sin θ
= 20 x sin 120°
= 20 x √3/2
Fy = 10√3 N