We just started this today in class and I have several homework problems, but I don't understand it at all. Can anyone show me step by step how to do this. The problem is $4/(\tan x + \cot x)$.
My teacher went ahead and told us the answer would be $4\sin x\cos x$, so we can make sure we use the right steps and get the correct answer. I am so lost in this. Please help me understand.