24^2= 20^2+34^2-2(20)(34)cos(q)
576=400+1156-(1360)cos(q)
576=1556-(1360)cos(q)
-980= -(1360)cos(q)
to the nearest whole degree, the measure of angle q is degrees.

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field