This will be an obtuse angled triangle because one angle is greater than 90 degrees.
I truly don’t know the answer but i think it is 837 feet
Focus of a parabola:

where vertex (h,k) p is the distance from vertex to focus
Answer:
245 degrees
Step-by-step explanation:
The circle is 360 degrees and you have only found 55 and 60 you add those together and you will get 115 to find jk you first add the numbers you have then minus them with 360 because its a circle. 360-115 will be 245 that would be your answer.