<p>Alright when I first read I won't be allowed to use a calculator, I though "oh ok, they might give me simple stuff". Sadly the simple stuff I thought of correlated between "2 + 2" and "5^2". But when I started with the Barron's, I saw stuff like sin21 or cos 67. Seriously, like how the hell can you do this? It got even weirder when I had to calculate stuff like 120/square root of 3. </p>
<p>Barron's was joking when they gave that stuff, right? </p>
<p>Or am I going to get screwed?</p>
<p>SAT Physics doesn’t allow calculators. If the question involves the sine of 21 degrees, the answer should leave it in the form “sin 21.”</p>
<p>And 120/sqrt(3) can easily be simplified to 40sqrt(3), you shouldn’t be expected to memorize a bunch of digits of sqrt(3). </p>
<p>Once you’re familiar with trig, the questions are actually not that hard.</p>
<p>Erm… ok how did you do that? 120/square root 3 = 40 sqaure root 3, how do you calculate this? </p>
<p>And in the Barron’s questions, the answers weren’t xsin 23 or anything of the like. The answers were in decimals!</p>
<p>To rationalize 120/sqrt(3) you multiple by sqrt(3)/sqrt(3). This gives 120sqrt(3) in the numerator and 3 in the denominator. Then divide 120 by 3 to get 40sqrt(3).</p>
<p><em>facepalm</em> I’ve taken that. Just didn’t strike me. Thanks alot! :)</p>