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The resultant of two forces acting at an...

The resultant of two forces acting at an angle of 150° is10 kgwt, and is perpendicular to one of the forces. The magnitude of smaller force is

A

`10sqrt3 kgwt`

B

`20sqrt3 kgwt`

C

20 kgwt

D

10 kgwt

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A
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