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If alpha le 2 sin^-1 x + cos^-1 x le bet...

If `alpha le 2 sin^-1 x + cos^-1 x le beta`, then

A

`alpha = - pi/2, beta = pi/2`

B

`alpha = 0, beta = pi`

C

`alpha - pi/2, beta = (3pi)/2`

D

`alpha = 0, beta = 2 pi`

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