JEE Main 202131 Aug, Morning shiftMathematicsEasyComplex Numbers and Quadratic Equations264× since 2002cosec18∘^\circ∘ is a root of the equation :AOption A. x² + 2x −-− 4 = 0BOption B. 4x² + 2x −-− 1 = 0COption C. x² −-− 2x + 4 = 0DOption D. x² −-− 2x −-− 4 = 0CheckSkip · show solution
