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If A={0,pi/6,pi/4,pi/3,pi/2} and f:Ato B...

If `A={0,pi/6,pi/4,pi/3,pi/2} and f:Ato B` is a surjection defined by `f(x)=cosx` then find B.

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The correct Answer is:
`{1,(sqrt(3))/2,1/(sqrt(2),1/2,0)}`
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