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The function f:XtoY defined by f(x)=sinx...

The function `f:XtoY` defined by `f(x)=sinx` is one-one but not onto, iff X and Y are respectively equal to

A

R and R

B

`[0,pi] and [0,1]`

C

`[0,(pi)/(2)] and [-1,1]`

D

`[(-pi)/(2),(pi)/(2)] annd [-1,1]`

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The correct Answer is:
C
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