Which of the following expressions are equivalent to sin(2θ)1+cos(2θ)\frac{\sin(2\theta)}{1 + \cos(2\theta)}1+cos(2θ)sin(2θ)?
tan(θ)\tan(\theta)tan(θ)
cot(θ)\cot(\theta)cot(θ)
2sin(θ)cos(θ)2cos2(θ)\frac{2\sin(\theta)\cos(\theta)}{2\cos^2(\theta)}2cos2(θ)2sin(θ)cos(θ)
2sin(θ)cos(θ)2sin2(θ)\frac{2\sin(\theta)\cos(\theta)}{2\sin^2(\theta)}2sin2(θ)2sin(θ)cos(θ)