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Solves `cos^(-1) x lt 2`

Answer» Correct Answer - `x in (cos2, 1)`
`cos^(-1) x gt 2`
or `0 le cos^(-1) x lt 2`
or `cos 0 ge x gt cos 2` (`:. Cos^(-1) x`is decreasing function)
`rArr x in (cos 2, 1]`


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