I don't know the golden cross or the cross of death but in math I know the tangent, here is the formula: y = f'(a)(x-a) + f(a). I calculated with the graph of Bombardier and the result gives me 75$. Unfortunately, the formula cannot give me the date... but according to me it should be soon because we deserve it in tabarn... to work hard like that with the calculations of the cross and the tangent... LOL. Good evening!