Answer:
The answer should be D. 120 degrees
so all those quadratics have their parent y = x², which has the graph of a "bowl".
and depending on the coefficient, the bowl is wider or not.
the larger the coefficient, the narrower the bowl, the smaller the coefficient, the wider the bowl.
well, 1/2 is smaller then 2, thus y = (1/2)x² is wider than y = 2x².
It would be Adjacent/hypotenus which is 36/39 and when simplified the answer is 12/13
