A satellite is 112 miles above the earth and the angle A to

A satellite is 112 miles above the earth, and the angle A to the horizon is 77degree . The radius of the earth is ______ miles

Here we will apply sine ratio

sin(77) = radius/(112+radius).

0.9743=r/(r+112)

0.9743(r+112) = r

0.9743r+109.129 =r

0.0257r =109.129

r= 109.129/0.0257

r= 4246.26 miles