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

"The lithosphere is subdivided into tectonic plates. The upper part of the lithosphere which chemically reacts to the atmosphere, hydrosphere and biosphere through the soil forming process is called the pedosphere. The lithosphere is underlain by the athenosphere which is the weaker, hotter, deeper part of the upper mantle."
D bc i see a lot of people over there
Answer:
Michael Collins
Explanation:
Among the three astronauts that went in the Appolo 11 mission to moon. Two of them landed their foot on the moon surface while one of them remained in the lander. His name was Michael Collins.
Michael Collins was command module pilot. While Neil Armstrong and Buzz Aldrin were the other two. Neil Armstrong Was the first to land his foot on the lunar surface.