October 2013 sat level 2 math

<p>yeah i think it was 54.6 you had to add 6 so the 100tan(angle)
the population one was 321 im pretty sure
what was the one where you had the angle and you had to find the sin of it? the triangle was like 3 4 rt37</p>

<p>The last one was 2-i. The one w/ the 3 4 sqrt 37 triangle was +(root3/2). The cos of theta could only be in the second or third quadrant (b/c it was negative) + since the angle was obtuse + in a triangle, it had to be between 90 and 180 (therefore it HAD to be in the SECOND QUADRANT). The sin had to be positive bc it’s is always positive in that quadrant. SO it was like .86 or something</p>

<p>Squash addict. I marked C too. S13nior i don think its 2-i</p>

<p>^^ can someone tell me what a10 was in the last problem? I’m forgetting. All i know is that the answer was a10*(i).</p>

<p>You get the answer as squash addict has said… By doing an analysis of remainders on division by 4. So 98 will leave same remainder as 10 making a98 = a10</p>

<p>Thats about right s13nior. The point i started this thread. Are you certain squash addict of C?</p>

<p>can someone tell me what they got for the one were it was like 4/(3sinx+2) and u had to say where it was undefined (like where 3sinx+2=0). What did you get for the angle?</p>

<p>I have registered a complaint regarding that qn s13nior. It is wrong.</p>

<p>what is the period of abs(tan2x)?</p>

<p>okay psych i actually didn’t realize what the initial term a10 was bc u posted the wrong value in your question. I believe i got C as well.</p>

<p>You use the fact that sin(2pi-x) = -sinx. But the asnwer doesnt match.</p>

<p>Does anyone rem the question with the ceiling, and walls? And was that probability one where you had to use 6C2 and 8C3, 840?</p>

<p>The period is pi/2 … You just need to graph it i think.
Teh surface area to be painted was in 700’s</p>

<p>the surface area was 798 or something like that</p>

<p>So what is a10 guys? How sure on C?! Help!</p>

<p>Ok wait … Can you confirm a10 = i - 2 atleast? :slight_smile: boy, im restless.</p>

<p>@Psych1</p>

<p>One more query is regarding the 3sinx + 2 (denominator) problem where the actual answer in rads doesnt match the options…</p>

<p>Is Answer is option ““e”” = 3.87</p>

<p>I will be grateful for an explanation ^</p>

<p>Oh i see! Thanks man… That was a basic error on my part. The ill effects of being lazy to use the calculator!</p>

<p>lets see what the curve be like, we all make lazy mistakes and running out of time…</p>

<p>Does any one knows what they normally curve in past Math 2 Exams… ??</p>