Question

what is the value of.​

Answer 1

Step-by-step explanation:

Geo-synchronus satellites are design revolve around equator line of earth or to any specific position like land , county or region. So it's revolve with same time period as earth do. So these satellites never need to cross any poles , that's why geostationary satellites can't be use for pole studies.

Answer 2

Step-by-step explanation:

(1/2) ^-2 +(1/3) ^-2 +(1/4) ^-2

(2/1) ^2+(3/1) ^2+(4/1) ^2

2^2 +3^2+ 4^2

4+9+16

=29