The number of solutions that <span>exist for the system of equations is equal to the number of independent linear equations that consist the matrix. For example, in order to find the values of two independent variables, then we have to provide two independent equations according to law of degree of freedom.</span>
This is the concept of trigonometry, the distance from the foot of the ladder will be given by: tan theta=[opposite]/[adjacent] opposite=17 ft adjacent=x ft theta=37° thus tan 37=17/x x=17/tan 37 x=22.56 ft =22.6 ft (to the nearest 10th of a foot)