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

One of the equation `cosx-x+1/2=0` lies in the interval `(0,pi/2)` (b) `(-pi/(2,0))` (c) `(pi/2,pi)` (d) `(pi,(3pi)/2)`

A

`(0, pi//2)`

B

`(-pi//2, 0)`

C

`(pi//2, pi)`

D

`pi, 3pi//2)`

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A
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