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The above figure shows the three coplaner forces P, Q and R acting at a point O. If these forces are in equilibrium, then

$\frac { P } { sin\beta } = \frac { Q } { sin\alpha } = \frac { R } { sin\gamma}$

$\frac { P } { sin\alpha } = \frac { Q } { sin\beta } = \frac { R } { sin\gamma}$

$\frac { P } { sin\gamma} = \frac { Q } { sin\alpha } = \frac { R } { sin\beta}$

$\frac { P } { sin\alpha } = \frac { Q } { sin\gamma} = \frac { R } { sin\beta}$

Answer : Option B

Explanation :

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