c sin P Q sin P Q cos Q cos P 2 A satellite s distance above the Earth s surface in km in terms of time in minutes is recorded in the table below 60 232 869 54 48 42 550 869 1000 66 100 24 30 Time min Distance km 6 550 18 12 100 232 36 869 550 232 A number of different equations have been determined and are listed below Equation 1 H t 450 cos 42 550 Equation 3 H t 450 sin t 6 550 a Determine if any of the equations are correct and what error s in the incorrect equations b Determine if other equations can be determined that are not listed already 72 78 232 550 Equation 2 H t 450 cos t 18 550 Equation 4 H t 450 sin t 30 550