<p>I don't understand what the "Special Right Triangles" are in regards to the official SAT formula sheet.</p>
<p>Well, pretty much the Special right triangle formulas are there to help you with some problems. They are used in problems that only tell you the side length of one side, but in which you know the angle measures. You can’t use Pythagorean Formula, so your only other thing is the 30-60-90 or the 45-45-90 triangles.</p>