MathematicsMedium210×since 2002Q3479The integral \int_\limits{1 / 4}^{3 / 4} \cos \left(2 \cot ^{-1} \sqrt{\frac{1-x}{1+x}}\right) d x is equal toA−1/2-1/2−1/2B−1/4-1/4−1/4C1/4D1/2Check answerSkip