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If ∣∣∣cos−1(1−x21+x2)∣∣∣<π3 and x∈(−1√k,1√k), then the value of k2+1 is equal to |
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Answer» If ∣∣∣cos−1(1−x21+x2)∣∣∣<π3 and x∈(−1√k,1√k), then the value of k2+1 is equal to |
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