One simple trigonometric identity is:
[tex]Tan x = \frac{Sin x}{ Cos x}[/tex]
Also, from basic trigonometric ratios, we know that:
[tex]Tan x = \frac{1}{Cot x}[/tex]
Substituting, we can solve and see what Cos/Sin is:
[tex]\frac{1}{Cot x} = \frac{Sin x}{Cos x}[/tex]
We can take the reciprocal of both sides:
[tex]Cot x = \frac{Cos x}{Sin x}[/tex]
So, the ratio of COT is COS/SIN.
ANSWER: cot
