MathematicsEasy129×since 2002Q5153cosec18∘^\circ∘ is a root of the equation :Ax² + 2x −-− 4 = 0B4x² + 2x −-− 1 = 0Cx² −-− 2x + 4 = 0Dx² −-− 2x −-− 4 = 0Check answerSkip