Answer:
x=-2
Step-by-step explanation:
Let's evaluate the ratio test:
The limit as 
of this quantity is 3, which is more than 1. So, the series diverges.
No the variable is always lowercase no matter what
<span>The reference angle is closest to the x-axis.
I will assume the above is 7pi/6. That would be a reference angle of pi/6, and the sin in the 3rd quadrant is negative, so the sin theta = - 0.5</span>
