Question

If cot x = .78, what is tan x?

Answer 1

The definition of cot is 1/tan.
What do you think that does?

Answer 2

Okay. Well, you're clearly not responding. We know that:
\[\cot(x) = 1/\tan(x)\]
\[\tan(x) = .78\]
You literally just replace the tan(x) in the first equation and get your answer.