Engineering Mechanics

Question
The below figure shows the three coplanar forces p, q and r acting at a point o. if these forces are in equilibrium, then
Options:
A.  P/sin β = Q/sin α = R/sin ɣ
B.  P/sin α = Q/sin β = R/sin ɣ
C.  P/sin ɣ = Q/sin α = R/sin β
D.  P/sin α = Q/sin ɣ = R/sin β

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Answer: Option B

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