WeiWeiMan
Well-Known Member
erm i didn't even ask you
jokes
ngl if you're doing well in yr10 5.3 and find it that easy, yr11 should be chill for you
if you're naturally good at math and genuinely love it, I reckon you should do ext 2.
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2026 HSC CHAT (5 Viewers)
- Thread starter hellowellohehe
- Start date
jokes
ngl if you're doing well in yr10 5.3 and find it that easy, yr11 should be chill for you
if you're naturally good at math and genuinely love it, I reckon you should do ext 2.
jane1820
Well-Known Member
Yh i havent gotten below 90% so far in 5.3 except the last exam but thats bc i didnt have enough time (BRO WHEN I GOT THE TEST BACK N I REREAD THE TEST I COULDVE GOTTEN EASY 95% istg if i just had extra 10 minerm i didn't even ask you
jokes
ngl if you're doing well in yr10 5.3 and find it that easy, yr11 should be chill for you
if you're naturally good at math and genuinely love it, I reckon you should do ext 2.
) fingers crossed bc everyone in yr 11 ext math is STRUGGLING like i think only 4/14 ppl passed w only one 90% which is an accelerated student im not so sure but if i do do good in ext 1 im definitely doing ext 2
ellurbee
Active Member
When is a responsible time to start studying for yearly exams- Holidays just started but I don't wanna leave things to the last minute. 
jane1820
Well-Known Member
My yearlies r in week 3 n i hvae left ALL MY STUDIES IN MY LOCKER except science n math n im so annoyed bc HOW TF DID I FORGETWhen is a responsible time to start studying for yearly exams- Holidays just started but I don't wanna leave things to the last minute.
im gonna start studying now for math n science so i can revise later n use some online resources to study for the rest of my subjects considering i dont physically have them UGH
jane1820
Well-Known Member
also did u guys hear abt the diddy thing? CRAZY DRAMA even tho im not interested n i seriously dont care its a bit scary ngl
Shavi Masee
Well-Known Member
What is it?
Nvm searched it up. I hope he rots in jail.
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jane1820
Well-Known Member
Nah brother is crazy
idk if u have any social media but conspiracy tiktok hitting hard w their theories
yk i deadass think jonathan enjoyed the whole thing ngl (he seems like someone who loves drama between rappers)
jane1820
Well-Known Member
Can anyone do this question (5.a.) for me? (Using the sine rule for finding angles)
View attachment IMG_7293.jpeg
View attachment IMG_7293.jpeg
jane1820
Well-Known Member
Apparently the answer is “75 degrees or 117 degrees”
Though i dont see how it can be 117 degrees considering the question says that theta is acute
ellurbee
Active Member
What answer did you get? Just 75 or something else?
sina/8 = sin42/6
a = sin^-1(8sin42/6)
a = 63.14...
theta = 180 - 42 - 63 = 75
yeah, it's 75 degrees. for this question, don't use the sine rule twice; the theta is not the subject of the sine rule in this equation, and therefore can be solved by simply using the missing angle formula for triangles with two known angles.
ellurbee
Active Member
Ha
*I'm looking at my notes and Ambiguous means 'not clear' or 'undecided' meaning that B could have two answers- an acute answer or an obtuse answer*
Have you heard of the Ambiguous case?
*I'm looking at my notes and Ambiguous means 'not clear' or 'undecided' meaning that B could have two answers- an acute answer or an obtuse answer*
jane1820
Well-Known Member
I got 63 degrees
i did the following steps: (also i swear my handwriting looks better on paper
)
yeah this is valid,,,,, but i don't think they'd use an ambiguous case in tests? at least, if they are, it'd be a bit of a dirty trick. the question in the (i'm assuming) textbook is pretty open, and you'd probably have to ask later in the test (if they include something like it) about whether they want you to solve the theta for the given triangle or the given information
jane1820
Well-Known Member
Hmm but why did u do that? (Im not even up to there i just skipped a few chapters to the sine rule so can u educate me a little?)
jane1820
Well-Known Member
Yh but the question says that theta is an acute not like it didnt specify (?)
you missed a step; the answer you got is correct, but it's not what you're solving for. you got the 2nd unknown angle in the triangle, but not the value of theta itself. from here you need to solve for theta using missing angles in a triangle w/ 2 known angles (180 - 63 - 42 = 75). basically you weren't wrong in the answer for the other unknown angle (i've dubbed angle 'a' in my solution), but forgot to solve for theta afterwards.I got 63 degrees
i did the following steps: (also i swear my handwriting looks better on paper
View attachment 44385
jane1820
Well-Known Member
what do u mean by ‘value’? Help im lost
isnt when u say (for example) a=3 in an equation doesnt that mean the value of a is 3?
sly_lyepat
Active Member
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- 2026
You have to solve the angle opposite to the missing side, the angle you just found is opposite to 8 , so minus the answer form the angle you just found from 180 so you do:I got 63 degrees
i did the following steps: (also i swear my handwriting looks better on paper
View attachment 44385
180-63-42=75
180(sum of all angles in a triangle)-63(angle you just solved)-42(angle they all ready gave)=75(theta)
jane1820
Well-Known Member
OHHH IT ALL MAKES SENSE NOW OMG THX
