cos-1(x/5)-sin-1(12/13)=tan-1(-35/56)
cos-1(x/5)-sin-1(12/13) = tan-1(-35/56)
cos-1 (x/5) - 67.38° = -44.19° add 67.38° to both sides
cos-1 (x/5) = 23.19° ...... this says that......
cos(23.19) = x/5 rearrange to solve for x
x = 5cos(23.19) = about 4.596
0.1478(x-45)=(623.15/x)^3.029
