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= 4. cos
= 4.
= 2.√3
= .cos
= 6√3 .(- 1)
= - 6√3
= .cos
= . 0
= 0
Σ = 2√3 + - 6√3 + 0
= - 4√3
= .sin α
= .sin
= 4 .
= 2
= . sin
= 6√3 . (0)
= 0
= .sin
= 2 . (- 1)
= - 2
Σ = 2 + 0 + -2
= 0
R =
=
= √12
= 2√3 N ...jawaban B