<p>does anyone know if this online score calculator is accurate?
AP</a> Pass - AP Calculus Calculator</p>
<p>also do we need to know sum to product formulas for the ap test?
like cos u + cos v = 2cos((u+v)/2)cos((u-v)/2)</p>
<p>product formula came up in an exam. looks like we gotta know it.</p>