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P,Q and R are three coplanar forces acti...

P,Q and R are three coplanar forces acting at a point and are in equilibrium. Given `P=1N` , `sintheta_1 =1/2` , the value of R is

A

0.9 N

B

1N

C

2N

D

`1/2` N

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The correct Answer is:
B
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