<p>@sjssharks
CHORD QUESTION: </p>
<p>let C be the midpoint of AB
sin ø = AC/R = CB/R</p>
<p>you want AB so you need two sinø
2sinø = AB / R</p>
<p>but since it is a unit circle R is 1 so the answer is just 2sinø</p>
<p>@sjsharks,
You’re thinking of a different problem. That one was 2sintheta</p>
<p>Yup 2sin(theta) was right</p>
<p>wait no guys, im talking about the arc length one. was that sin2x or 2sinx</p>
<p>Hmm i dont really remember an arc length question… you mean the one asking for the period?</p>
<p>damn…i just want a 780+ ■■■■■…do you guys think i can get that with 2 omit 4 wrong?</p>
<p>@sjsharks
for that one you were not suppose to find the arc but the chord and the answer is 2sinø</p>
<p>2sintheta. Equilateral triangle with side length one. So 2sine pi/6 is 1 (2*.5)</p>
<p>@haters
you are right, the one for the period is sin(2ø)</p>
<p>-4 no omit is that gonna be an 800?</p>
<p>@sj
depends if by -4 you mean 4 wrong or 3 wrong including penalties</p>
<p>Guys one question, what was the answer for the one that had t>3x and 0>y>4 when y=5?
That makes NO sense!</p>
<p>@lalalove:</p>
<p>1+(1-1/2)+(1/2-1/3)+(1/3-1/4)+…+(1/(n-1)-1/n) = 1+1-1/n=2-1/n
everything but the first two things (1, 1) and the last thing (-1/n) cancel out.</p>
<p>Like there’s a -1/2 followed by a 1/2, a -1/3 followed by a 1/3 , etc.</p>
<p>@kili16</p>
<p>if t>3x then y is between 0 and 4</p>
<p>but y is not between 0 and 4 since it is 5 </p>
<p>so t is not greater than 3x which implies that t is smaller OR equal to 3x</p>
<p>Has anyone taken this test before? Can they make a prediction what the curve will be based on the relative difficulty and the curve on their previous test. Thanks</p>
<p>@kili16
it was a logical flow problem. take the contrapositive, so when y-5 t= or< 3x. I missed it too, totally freaked and bubbled in t<3x, which was wrong :(</p>
<p>@sj, ppl are saying that a raw of 43 will prob give you an 800. -4 is nothing to worry about right nowlol</p>
<p>0>y>4 one was just x>=3… someone posted an explanation with contrapositives earlier but I just kinda logic’d it out haha</p>
<p>some other questions I remembered:
circle equation, quadratic inequality, perpendicular lines: what’s mn?</p>
<p>Math level 2 is so much easier than math level 1 i think (to get 800)</p>