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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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