1.

If cot−1(4+24)+cot−1(4+64)+cot−1(4+124)+.....∞=tan−1(ab), where a and b are relatively prime, then

Answer»

If cot1(4+24)+cot1(4+64)+cot1(4+124)+.....=tan1(ab), where a and b are relatively prime, then




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