Question

The tangent ratio compares the length of what to the length of what

Answer 1

By definition in a triangle with a right angle, the tangent compares two of its sides:
Tanx = (C.O) / (C.A)
Where,
x: angle
C.O: Opposite leg.
C.A: Adjacent leg.
Therefore the tangent compares the length of the opposite leg with the length of the adjacent leg.
Answer:
the tangent compares the length of the opposite leg with the length of the adjacent leg
Tanx = (C.O) / (C.A)