A remote sensing satellite is revolving in an orbit of radius x above the equator of earth. Find the area on earth surface in which satellite can not send message.

A remote sensing satellite is revolving in an orbit of radius x above

1.	A remote sensing satellite is revolving in an orbit of radius x above the equator of earth. Find the area on earth surface in which satellite can not send message.
Answer» Solution : Area of STRIP =`2Rsin thetaxx2piR` `=4piR^(2)SIN theta` Area of strip`=4piR^(2)(sqrt(x^(2)-R^(2)))/x` Area not covered `=4piR^(2)-4piR^(2)(sqrt(x^(2)-R^(2)))/x` `=(1-(sqrt(x^(2)-R^(2)))/x) 4piR^(2)`