Answer:
C.
Step-by-step explanation:
If we consider the triangle we can draw in the Quadrant IV, as cot O =
- 9/18, and cot = adjacent/opposite then adjacent ( x axis) side is 9 and the opposite side = -18.
So the hypotenuse = √ ((9)^2 + (-18)^2)
= √405.
Therefore:
tan O = -18/9
sin O = -18/√405
cos O = 9/√405
csc O = -√405/18
sec O = √405/9.
