The expression simplifies to a constant, a single circular function, or a power of a circular function.

Use fundamental identities to simplify the expression.

cot x tan x

**Solution:-**

First, write all of the function in terms of sines and cosines.

tan x = and cotx = .

This allows us to simplify the expression.

cot x tan x = = 1

Thus, cot x tan x = 1.