Can't be done with just you described. You have to know BB drop as well because BB center determines reach by definition and stack.
I am not going to derive the forumulas for you right now. At some point maybe I will if nobody else has them handy.
It is just trigonometry. Recognizing this isn't everybodles strong suit, I understand if you can put the formulas together.
Maybe somebody will for you. I am going out for a long ride.