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nerd

I didnt know you could equate cos(ax+b)=cos(c) then ax+b=c

No u will lose marks

one of the solutions said "iqr is too small for D" but that boxplot isn't even to scale. I think they just wanted to show you that it was normally distributed

I asked chat gpt,

Surely question 8 is C right? Cause the boxplot can look like that, but for C, it's multimodal.

someone already did, this one is the highest quality pdf of the test we have rn

I think you could have gotten a tan since you have another cos then you could have solved it normally

The only other way I think is possible is changing cos into sin

one of the solutions I saw did it that way. How did you do it?

No the from question 26 and before, those were like the last year questions. We never even learnt the identity if cos(ax+b) = cos(c) ax+b = c. I don't even think that's in the syllabus. Unless we were suppose to change cos into sin.

How much time did you have to spare when you did the test?

here

Solutions for the 2024 paper :) This one is the most correct one

better scanned version here

I think we were suppose to convert cos in to sin, then we solve for x

Why they making us write essays in math lmao

yes that answer was wrong

wasnt really 3d trig in that we had to manipulate and sove simultaneous equations

Quwstion 22 wrong ur supposed to times the integral by two to get the other half