Which expression is equivalent to tan(x)−cot(x)tan(x)+cot(x)\frac{\tan(x) - \cot(x)}{\tan(x) + \cot(x)}tan(x)+cot(x)tan(x)−cot(x)?
cos(2x)\cos(2x)cos(2x)
−cos(2x)-\cos(2x)−cos(2x)
sin(2x)\sin(2x)sin(2x)
1−2sin2(x)1 - 2\sin^2(x)1−2sin2(x)