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Find the range of f(x)=cosec^2x+sin^2x....

Find the range of `f(x)=cosec^2x+sin^2x`.

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Verified by Experts

We have
`f(x)=cos^2x=sec^2x`
`=(cos-secx)^2+2cosxsecx`
`=2+(cosx-secx)^2ge2`
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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS -SINGLE CORRECT ANSWER TYPE
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