Answer: 1) Angular separation equals 0.0000031 degrees
2) Angular separation in arc -seconds equals 0.011156"
Explanation:
For 2 stars separated by a distance 'S' and at a distance 'D' from the earth the angular separation in radians is given

Applying values we get

Now we know that 'π' radians equals 180 degrees thus the above value in degrees shall be equal to

2)
The angular separation in arc- seconds is given by

I think get energy. right?
Answer:
In the coustoms hall at tashkurgan, the last town on the road from china's xinjiang province into pakistan, I felt a by-now familiar sense of trepidation. The karakoram highway, also known as the friendship highway in china, was built by the government of pakistan and china. It was started in 1959 and public in 1979. The china-pakistan border is 592 kilometre (368mi) and runs west-east from the disputed tripoint with afghanistan to the disputed tripoint with india in the vicitrity of the siachen glacien.
The answer is A.it forms on the earths surface