MathematicsEasy179×since 2002Q4263limx→01−cos2x2x\mathop {\lim }\limits_{x \to 0} {{\sqrt {1 - \cos 2x} } \over {\sqrt 2 x}}x→0lim2x1−cos2x isA111B−1-1−1CzeroDdoes not existCheck answerSkip