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If 3tan−1 x+cot−1 x=π, then x equals to (a) 0 (b) 1 (c) −1 (d) 12 |
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Answer» If 3tan−1 x+cot−1 x=π, then x equals to (a) 0 (b) 1 (c) −1 (d) 12 |
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