The value of 2tan-1[cosec(tan-1x) - tan(cot-1x)] is – McqOptions

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1.	The value of 2tan-1[cosec(tan-1x) - tan(cot-1x)] is
A.	tan x
B.	cot x
C.	tan-1 x
D.	cosec-1 x
Answer» D. cosec-1 x

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