2026 HSC CHAT (9 Viewers)

cheesynooby

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I apologise. I meant the highlighted section.
oh whoops sorry i thought u meant why they did all those different solutions, not how they got there
sinx is periodic (with a period of 2π) so if ur working out the solutions to sinx = something there will be infinite solutions.
adding/subtracting an integer multiple of 2π to any solutions u get for the range from 0 to 2π will thus also work (since the sine curve repeats every 2π)
from considering the unit circle, u can get that there is a solution in the 3rd quadrant and 4th quadrant which gives u the solutions for 0 ≤ 2theta ≤ 2π
(u could think of this as the angle such that the point on the unit circle as a y coordinate of -sqrt3/2 which is in the 3rd and 4th quadrant)
to get for -2π ≤ 2theta ≤ 2π therefore u subtract 2π from each of those 2 solutions.
Screenshot 2025-09-02 at 3.00.46 pm.png
 

isho-3

chronic procrastinator.
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i'm debating whether i actually want to put effort for my chinese oral exam this coming friday or if i'm just gonna pretend it doesnt exist until the day before and keep working on my ee1 ip,,,,,,,
 

Study to success

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Who else is cooked and has done 0 study (me). Whenever I try to study my body shuts down so I guess the universe just wants me to give up. I swear I need to get out of my house and do other stuff but my parents won't let me and it pmo. And then they blame me for not doing any exercise. Do u guys think if I talk to the school counsellor then they can explain to my year co/ teachers as to why I did so terrible on prelims
 

WishingForPastPapers

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Who else is cooked and has done 0 study (me). Whenever I try to study my body shuts down so I guess the universe just wants me to give up. I swear I need to get out of my house and do other stuff but my parents won't let me and it pmo. And then they blame me for not doing any exercise. Do u guys think if I talk to the school counsellor then they can explain to my year co/ teachers as to why I did so terrible on prelims
Talk to the school counsellor on about your mental wellbeing, you need off days and take walks without your phone to destress.
 

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