The largest desert on earth is the Sahara Desert in Northern Africa. The Sahara is 9,400,000 km2.
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
![\theta _{rad}=\frac{S}{D}](https://tex.z-dn.net/?f=%5Ctheta%20_%7Brad%7D%3D%5Cfrac%7BS%7D%7BD%7D)
Applying values we get
![\theta _{rad}=\frac{80\times 10^{6}}{150\times 9.46\times 10^{12}}\\\\\therefore \theta _{rad}=\frac{1}{18487500}radians](https://tex.z-dn.net/?f=%5Ctheta%20_%7Brad%7D%3D%5Cfrac%7B80%5Ctimes%2010%5E%7B6%7D%7D%7B150%5Ctimes%209.46%5Ctimes%2010%5E%7B12%7D%7D%5C%5C%5C%5C%5Ctherefore%20%5Ctheta%20_%7Brad%7D%3D%5Cfrac%7B1%7D%7B18487500%7Dradians)
Now we know that 'π' radians equals 180 degrees thus the above value in degrees shall be equal to
![\therefore \theta _{degrees}=\frac{1}{18487500\times \pi }\times 180^{o}=0.0000031^{o}](https://tex.z-dn.net/?f=%5Ctherefore%20%5Ctheta%20_%7Bdegrees%7D%3D%5Cfrac%7B1%7D%7B18487500%5Ctimes%20%5Cpi%20%7D%5Ctimes%20180%5E%7Bo%7D%3D0.0000031%5E%7Bo%7D)
2)
The angular separation in arc- seconds is given by
![\theta ''=\theta ^{o}\times 3600\\\\\theta'' = 0.0000031\times 3600=0.011156"](https://tex.z-dn.net/?f=%5Ctheta%20%27%27%3D%5Ctheta%20%5E%7Bo%7D%5Ctimes%203600%5C%5C%5C%5C%5Ctheta%27%27%20%3D%200.0000031%5Ctimes%203600%3D0.011156%22)
By looking at the map that shows a portion of the western United States and Canada. The graph that best represents the average monthly air temperature for both Vancouver and Winnipeg is the fourth graph or number 4.
B round hills I did it in a test got it right it’s not any other