Answer:
While determining the angle [tex]\theta[/tex] with the tangent ratio or cotangent ratio uses the same sides lengths but the ratios are inverse of each other.
Step-by-step explanation:
See the diagram attached.
Let us assume a right triangle Δ ABC with ∠ B = 90°. Now, assume that the angle ∠ CAB = [tex]\theta[/tex] and the sides AB, BC, CA are 3, 4, 5 units respectively.
The tangent ratio of an angle [tex]\theta[/tex] is given by
[tex]\tan \theta = \frac{BC}{AB} = \frac{4}{3}[/tex]
Again, the cotangent ratio of angle [tex]\theta[/tex] is given by
[tex]\cot \theta = \frac{AB}{BC} = \frac{3}{4}[/tex]
Therefore, in both the cases of tangent ratio and cotangent ratio are inverse of each other and while determining the angle [tex]\theta[/tex] with the tangent ratio or cotangent ratio uses the same sides lengths but the ratios are inverse of each other. (Answer)