Ex 2.2, 12 Find the value of cot (tan−1 α + cot−1 α) cot (tan−1 𝛂 + cot−1 𝛂) = cot (𝝅/𝟐) = cot ((180°)/2) = cot (90°) = 0 (As tan−1 x + cot−1 x = 𝜋/2)

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.

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