Q) sin(cot^-1x)+------- A)1/root(1/x^2) B)root(1/x^2) C)-1/root(1/x^2) D)none

Q) sin(cot^-1x)+-------

A)1/root(1/x^2)         B)root(1/x^2)          C)-1/root(1/x^2)         D)none


1 Answers

jitender lakhanpal
62 Points
12 years ago

Dear vivek

         cot-1x = Φ 

so cot Φ = x    

sin  Φ = 1/ √1+x2

 Φ = sin-1      1/ √1+x2

so sin Φ = 1/ √1+x

answer is d


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