What is Adjacent/Opposite equal to?

Cotangent
Cotangent shortened as “cot" is the correct answer to the question above. It is one of the six functions in trigonometry. The cotangent of an angle is the length of the Adjacent side divided by the Opposite side

It is calculated as:
Cot = Adjacent/Opposite.
Cotangent can also be derived in 2 ways. These derivatives are:
Cotx = 1/(tanx)
Cotx = cosx/sinx

Unlike sine, cosine, and tangent, cotangent is less used. In calculus, cotangent is derived as -csc^2(x).
Other trigonometry functions to watch out for are: Secant (Sec A = 1/(cos A)) and Cosecant (Csc A = 1/(sin A))