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cot (tan^-1 α + cot^-1 α) is equal to: (a) 1 (b) ∞

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in Inverse Circular Functions by (48.0k points)

cot (tan-1 α + cot-1 α) is equal to:

(a) 1

(b) ∞

(c) 0

(d) none of those

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1 Answer

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Answer is  (c)

cos (tan-1 a + cot-1 a)

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