<p>So I am going over formulas one last time and found a couple in my book that I am not sure if we need to know.</p>
<p>They are, the trigonometric identities (such as cos(A+B) or cos2x) as well as the number e as expressed as a limit (Lim as n–>+infinity of (1+1/n)^n = e</p>
<p>They seem pretty obscure, does anyone know if they would show up on the actual exam?</p>