1.If tanθ+tan4θ+tan7θ=tanθtan4θtan7θ\tan\theta + \tan4\theta + \tan7\theta = \tan\theta\tan4\theta\tan7\thetatanθ+tan4θ+tan7θ=tanθtan4θtan7θ, then θ=\theta =θ=a.nπ4, n∈I\dfrac{n\pi}{4},\; n \in I4nπ,n∈Ib.nπ7, n∈I\dfrac{n\pi}{7},\; n \in I7nπ,n∈Ic.nπ12\dfrac{n\pi}{12}12nπ, where n≠12m+6n \neq 12m + 6n=12m+6, n,m∈In,m \in In,m∈Id.nπ, n∈In\pi,\; n \in Inπ,n∈ILogin to continueOnly logged in users canattempt or see the solution.
