One root of the equation cosx -x +1/2=0 ...

One root of the equation `cosx -x +1/2=0` lies in the interval

A

`[0, pi/2]`

B

`[-pi/2,0]`

C

`[pi/2,pi]`

D

`[pi, (3pi)/(2)]`

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The correct Answer is:

A

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