1.If 1−cos2θ1+cos2θ=3\dfrac{1 - \cos 2\theta}{1 + \cos 2\theta} = 31+cos2θ1−cos2θ=3, then the general solution of θ\thetaθ isa.2nπ±π62n\pi \pm \dfrac{\pi}{6}2nπ±6πb.nπ±π4n\pi \pm \dfrac{\pi}{4}nπ±4πc.2nπ+π32n\pi + \dfrac{\pi}{3}2nπ+3πd.nπ±π3n\pi \pm \dfrac{\pi}{3}nπ±3πLogin to continueOnly logged in users canattempt or see the solution.