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If x>=0and theta=sin^-1x+cos^-1x-tan^-1x...

If `x>=0and theta=sin^-1x+cos^-1x-tan^-1x,` then

A

`pi/2 lt= theta lt= (3pi)/(4)`

B

`0 lt= theta lt= pi/4`

C

`-pi/4 lt= theta lt= 0`

D

`pi/4 lt= theta lt= pi/2`

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