<p>@maladroit If you got none wrong that’s a 770 on last year’s scale…</p>
<p>anyone got a link with the scales from past years?</p>
<p>ANGLE BETWEEN TWO LINES PROBLEM</p>
<p>@ozonik:</p>
<p>Use the formula for the angle between lines having slopes m1 & m2, which is
Tan @=(m1-m2)/(1+m1<em>m2), so you get inverse tan of ((3/5-2.5)/(1+3/5</em>2/5)) or 9.16 degreees.</p>
<p>Guys in pretty much every prep book there’s last years curve which will tell you what scores to expect… Go check it yourselves haha</p>
<p>i just graphed lines with slopes of 2/5 and 3/5 and it looked really small so I picked 9.16 or whatever LOL</p>
<p>guys what was the answer for the question like “(x < 3) and (0 < y <4), what happens when y=5”?</p>
<p>was the answer to one question 2x^2 times the sqrt of something? it had to do with sin and cos</p>
<p>@flying I didn’t feel like doing guess and check for that one and losing time so I just omitted it…</p>
<p>i think it said sinx=x^2 or something like that</p>
<p>i got 2x^2 * sqrt (1 - something). not sure if it’s right</p>
<p>@shamwowz:</p>
<p>f(t) was 2cos(t) and g(t) was sin(t/2), so slope through (0, f(0)) and (pi, g(pi)) is really slope through (0, 2) and (pi, 1), so m=(2-1)/(0-pi)=1/-pi=-1/pi</p>
<p>Yep, thats right. If you do a double angle you get 2sin(theta)cos(theta). sin(theta) = x^2, and cos(theta) = sqrt(1 - x^4).</p>
<p>@Battlebrick yeah i guessed that because i knew one part was 2x^2 but i didn’t know how to get the other part</p>
<p>the 1/g(x) question was where the vertical asymptote was, right?</p>
<p>@battlebrick:
sin(2A) = 2 sin A cos A=2<em>x^2</em>sq root(1-x^4)</p>
<p>@battlebrick:
yeah, it was where the vertical asymptote was, which was at x=3.</p>
<p>Didn’t they say on 50 how far off is the laser from the center not the disc? That’s why i put 1037</p>
<p>what was the one where you had to find the length of BC on triangle ABC where ‘a’ was 50 and ‘c’ was 30 or something like that??</p>
<p>Ok I understand that the answer was -1/pi… But does anyone remember what choice that was, as in A,B,C,D,E?</p>
<p>For the one where it was n=1.05(n(n-1)) or something did you guys get 155? I’m not sure if i multiplied the right amount of times -__-</p>