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Prove that: tan−1[√1+x−√1−x√1+x+√1−x]=π4−12cos−1x,−1√2≤x≤1 |
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Answer» Prove that: tan−1[√1+x−√1−x√1+x+√1−x]=π4−12cos−1x,−1√2≤x≤1 |
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