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If f: R toS, defined by f(x) = sin x -sq...

If `f: R toS`, defined by `f(x) = sin x -sqrt(3) cos x + 1`, is onto then the interval of S, is

A

`[-1, 3]`

B

`[1,1]`

C

`[0,1]`

D

`[0,-1]`

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The correct Answer is:
A
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