ezex Posted May 10, 2008 Report Share Posted May 10, 2008 Ok so we finally finished math tests. Have fun? I'd have to say it was what I expected, no less no more. But is anyone itching to know how to do certain problems? I know for a fact that most people had problems with number 2 in paper 1, the one about sin(140), etc...So here it goes: 2. Given: Sin (40) = p, Cos (70) = q (a) (i) Find Sin (140) Easy question: remember that an angle is the same as its supplement (depending on the quadrant it might change signs so watch out). So in reality, Sin (140) = - Sin (140 - 180) = - Sin (-40) = -(-p) = p (ii) Find Cos (110) same thing except the sign is different because cosine is - in the second quadrant (110 degrees is in the second quadrant). Cos (110) = -Cos (110-180) = -Cos (-70) = -(q) (b) Find Cos (140) Cos (140) = Cos (70 + 70) = Cos (2(70)) = (Cos (70))^2 - (Sin (70))^2 = 2(Cos (70))^2 - 1 = 2q^2 - 1 © Find Tan (140) Tan (140) = Sin (140)/Cos (140) = p / (2q^2 - 1) See how easy it was??? lol All right so don't forget to ask any questions about either paper (the paper 2 discussion is in another thread) or any questions, if you guys know the question I'll be able to give you a full true answer to it Link to post Share on other sites More sharing options...
Afterglow Posted May 10, 2008 Report Share Posted May 10, 2008 (edited) Are you talking about Math SL, paper 1? What time zone do you have? Because I don't remember that question....Then again, maybe we had different time zones paper. Either way, my reaction afterwards was --> HELL! and I know for a fact that pretty much more than half of the class also were 'What the HELL was THAT?!?!' It was really hard and looking at the thread at TSR I've noticed that many people are complaining about the difficulty of it. I was shocked. I felt so bad when I was done. Edited May 10, 2008 by Afterglow Link to post Share on other sites More sharing options...
Aboud Posted May 11, 2008 Report Share Posted May 11, 2008 (edited) ezex what are you talking about?! i think you timezone is different than ours because i dont remember any of what you're saying... Edited May 11, 2008 by Aboud Link to post Share on other sites More sharing options...
sarah Posted May 11, 2008 Report Share Posted May 11, 2008 yea we're time zone 2.. im guessing thats time zone 1 isnt that not fair though? r the curves seperate for each timezone? bcuz if not then i think its not fair since a paper might have been relatively easier than another Link to post Share on other sites More sharing options...
deissi Posted May 12, 2008 Report Share Posted May 12, 2008 yea we're time zone 2.. im guessing thats time zone 1isnt that not fair though? r the curves seperate for each timezone? bcuz if not then i think its not fair since a paper might have been relatively easier than another They are separate for each TZ. And yes, ezex is talking about TZ1 since he's in the states, Europe onwards is TZ2 Link to post Share on other sites More sharing options...
a.barghuthi Posted May 12, 2008 Report Share Posted May 12, 2008 i got TZ 0 lol if that question came i woudl be like wat the hellbut our test was smooth .! Link to post Share on other sites More sharing options...
Guest vpatrickd Posted May 12, 2008 Report Share Posted May 12, 2008 TZ2's Math Paper 1 was HELL man! I agree with Afterglow. >_< All my friends were stressed because of it. One cried ( ). But seriously.. it was like hell. Link to post Share on other sites More sharing options...
Aboud Posted May 12, 2008 Report Share Posted May 12, 2008 i got TZ 0 lol if that question came i woudl be like wat the hellbut our test was smooth .! arent we in the same country?? how come we had different TZs? we got TZ2.... it was ok.. Link to post Share on other sites More sharing options...
a.barghuthi Posted May 13, 2008 Report Share Posted May 13, 2008 hey aboud was the first question about IQR median and such in paper 1 math??because that test was gd u are able to solveas for paper 2 i remember that i was singing the whole test (humming to be precise) but i dont remember any question that i got which is like so weird.no crying happened here but some guys saw the inegration sign for the first time in the test. Link to post Share on other sites More sharing options...
IBStuck Posted May 14, 2008 Report Share Posted May 14, 2008 i so got that question wrong. but i showed some work, and i was working in the right direction.. i just did it wrong. GRRRR Link to post Share on other sites More sharing options...
Ashika Posted May 15, 2008 Report Share Posted May 15, 2008 I thought it was a fair paper!The only question I had an issue with was #2 as was the case with most people. Link to post Share on other sites More sharing options...
Aboud Posted May 15, 2008 Report Share Posted May 15, 2008 hey aboud was the first question about IQR median and such in paper 1 math??because that test was gd u are able to solveas for paper 2 i remember that i was singing the whole test (humming to be precise) but i dont remember any question that i got which is like so weird.no crying happened here but some guys saw the inegration sign for the first time in the test.hey... yes our exam started with a question about IQR.... i thought it was ok... but not all the people (especially my classmates...) I actually cant remember anything in the exam nowl... i only remember that the IBO logo was different and to the top right of the page instead of top left... lol Link to post Share on other sites More sharing options...
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