Given a spacecraft positioned $2000km$ above the Earth's surface and considering a

ground station located at Latitude $20$ and Longitude $90,$ as well as a satellite subpoint

$($SSP$)$ at Latitude $12$ and Longitude $82,$ determine the following with relevant

assumption taken in account for the computation.

a$.$ Create an illustrative diagram depicting the satellite SSP$,$ target location, and

the Earth's surface.

b$.$ Calculate the distance and azimuth between the ground station and the SSP$.$

c$.$ Compute the distance and azimuth between the ground station and the

spacecraft.

d$.$ Determine the elevation angle of the spacecraft as observed from the ground

station.