Which of the following is equivalent to sin(2x)1+cos(2x)\frac{\sin(2x)}{1 + \cos(2x)}1+cos(2x)sin(2x)?
tan(x)\tan(x)tan(x)
cot(x)\cot(x)cot(x)
sin(x)\sin(x)sin(x)
cos(x)\cos(x)cos(x)