OK, here goes.
I hope this works, looking for the values of x and k.
Equation 1:
kx + 648.56x - 30.8k = 43293.752
Equation 2:
-28.2kx - 28.2xy + 868.56k + 4480.98x + 868.56y = 264247.368
Where y = 1.8 / sin (tan-1 ((x-30.8) / (k-12.1)) )
Thanks