<p>just curious if there are any formulas I should now that are not fairly obvious i.e. Pythagoreans Theorem</p>
<p>like do I need to know like volume of a pyramid or something?</p>
<p>Know the circle formula</p>
<p>As in (x – h)^2 + (y – k)^2 = r^2</p>
<p>with center (h,k)</p>
<p>What about any trig formula,</p>
<p>for periods and what cosine falls between ( in terms of pi) etc.</p>
<p>Like, is a full Period a while up and down, or half of one</p>
<p>No need to know periods of trig functions… At least I don’t think so.
Definately know area of a parallelagram (sp?)</p>