Which of the following expressions is equivalent to sin(2θ)cos2(θ)−sin2(θ)\frac{\sin(2\theta)}{\cos^2(\theta) - \sin^2(\theta)}cos2(θ)−sin2(θ)sin(2θ)?
tan(2θ)\tan(2\theta)tan(2θ)
cot(2θ)\cot(2\theta)cot(2θ)
sin(2θ)\sin(2\theta)sin(2θ)
cos(2θ)\cos(2\theta)cos(2θ)