Thx, I got it now, aced my test also :D
Pattern I went with made it so easy for me,
I can just take x=7cot(39)
divide the 7 out right away so that x over something = cot(theta)
x/7 = cot39
Then just set trig function what side it represents, in this case adj/op
x/7 = a/o
and it matches up every time x=a and 7=o adjusted to theta