A body is in equilibrium under the action

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A body is in equilibrium under the action of three coplanar forces $P, Q$ and $R$ as shown in the figure. Select the correct statement

A

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

B

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

C

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

D

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

A body is in equilibrium under the action of three coplanar forces $P, Q$ and $R$ as shown in the figure. Select the correct statement

According to Lami's theorem
$\frac{P}{{\sin \alpha }} = \frac{Q}{{\sin \beta }} = \frac{R}{{\sin \gamma }}$