Answer:D
Step-by-step explanation:
Here's link to the answer:
cutt.us/tWGpn
i think this is the answer for n=-2/a+4
Sin(theta)=√3/2, 0≤theta≤360
In a unit circle, sin is y/r, r is always positive, y is positive in the first and second quadrant only.
sin60=√3/2, sin120=√3/2
so theta is 60 or 120