A geostationary satellite is at height h above the Earth's surface. The Earth's radius is R. With θ as shown in the figure, select the correct statement(s) about the visible/hidden region on Earth.

Select all that apply

• Option A

  Minimum colatitude reachable for communication is sin⁻¹[R/(R+h)].

• Option B

  Maximum latitude reachable for communication is cos⁻¹[R/(R+h)].

• Option C

  Area of Earth not visible from the satellite is 2πR²(1 + sinθ).

• Option D

  Area of Earth not visible from the satellite is 2πR²(1 + cosθ).