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Please check https://www.teachoo.com/3095/679/Misc-14---Solve-tan-1-(1---x)-(1---x)-=-1-2-tan-1-x---NCERT/category/Miscellaneous/
Written on Oct. 17, 2017, 10:07 p.m.
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Answer of this question
Solve tan-1(1 − x)/(1 + x) = 1/2 tan-1x
Davneet Singh
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