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Find the resultant of the vectors vec(OA...

Find the resultant of the vectors `vec(OA), vec(OB), vec(OC)` as shown in figure. The radius of the circle is r.

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`vecR=vec(OA)+vec(AB)+vec(OC)`
`vecR= rhati+r cos 45 I +r sin45 hatj+r hatj`
`vecR=(r+(r)/(sqrt(2)))hatj+(r+(r)/(sqrt(2)))hatj`
`|vecR|= (sqrt(2r)+tau)` along `vec(OB)`
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