Determine the sum of all x∈[0,2π]x \in [0, 2\pi]x∈[0,2π] such that tan2(x)−1=0\tan^2(x) - 1 = 0tan2(x)−1=0.
2π2\pi2π
4π4\pi4π
3π3\pi3π
6π6\pi6π