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A particle is moving uniformly in a circ...

A particle is moving uniformly in a circular path of radius r. When it moves through an angular displacement `theta` , then the magnitude of the corresponding linear displacement will be

A

`2r cos (theta/2)`

B

`2r cot (theta/2)`

C

`2r tan (theta/2)`

D

`2 r sin(theta/2)`

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