Answer:

Step-by-step explanation:
The given angle is 240 degrees.
We need to find the exact value of each trigonometric function for the given angle θ.
Since
, it means θ lies in 3rd quadrant. In 3d quadrant only tan and cot are positive.






Therefore, 
Answer:
g(r) = 18
Step-by-step explanation:
Substitute 10 into r
g(10) = 2( (10) -1)
= 2(9)
= 18
Answer: 10
Step-by-step explanation:
I'd have to say it's A. Please don't blame me if I'm wrong. :)