Write the value of cot (tan–1a + cot–1a). – InterviewSolution

1.	Write the value of cot (tan–1a + cot–1a).
Answer» cot(tan^-1a + cot^-1a) = cot(π/2 - cot^-1a + cot^-1a) = cotπ/2 = 0

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