Answer:
No solution
Step-by-step explanation:
There is no option good for the two graphs.
I think simple vertical stretch or simple vertical compression will occur at the same side of axis, but |x| located at quadrant I and II while -1/2|x| located at quadrant III and IV.
The answer should be "reflect over the x axis and then vertical stretch"
Cos(60) = cos(90 - 30) = sin(30) = 1/2
This should be what you want.
Can you insert a photo of the question please it would greatly help me answer this