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Q) sin(cot^-1x)+-------
A)1/root(1/x^2) B)root(1/x^2) C)-1/root(1/x^2) D)none
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+x2
answer is d
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