Question

( frac{theta}{1} cot ^{1}(sqrt{1+x^{2}-x})=frac{pi}{4}+frac{1}{2} operatorname{sen} x )
( L H S )
let ( x=tan x )
( cot 1(sqrt{1+tan ^{2} x-19 operatorname{nn} x}) )
( cot ^{+}left(frac{2 e c^{n}-74 n^{n}}{cot ^{-1}left(frac{1-sin x}{cos n}right)}right. )
( cot left(tan left(frac{pi}{4}-frac{pi}{2}right)right. )
( cot ^{-1} tan frac{pi}{2}left(frac{pi}{4}+frac{pi}{3}right) )
( frac{pi}{9}-frac{1}{2} pi sin (H cdot D) )

# P. T cet (1+x2-x) = 1 + 4 tante

Solution