Answer:
B
Explanation:
Let's draw this (see diagram).
We know this is in the third Quadrant, and we also know the opposite and adjacent side lengths of the right triangle: opposite is -5 and adjacent is -9.
We want to find cotangent, which is adjacent / opposite. So, we have:
cot(θ) = -9/-5 = 9/5.
The answer is B.