Class of 2025 (2025 HSC CHAT) (16 Viewers)

[.kumori]

if this comment gets 8 likes coolcat6778 will do face reveal

guys we are at 7 likes XD

 

[C2H6O]

wow this place really fell off

 

[Kat.crazi]

Rip

 

[Bendwhat?_over]

Join the 2026 thread!

 

[Study to success]

guys when ur doing trig functions is it necessary to know how to do it without subbing in values into the calculator. For me it's faster that way but my teacher doesn't want us to do that cause we're in "adv". I'm actually not bothered tho cause the other way is so much longer

 

[.kumori]

guys when ur doing trig functions is it necessary to know how to do it without subbing in values into the calculator. For me it's faster that way but my teacher doesn't want us to do that cause we're in "adv". I'm actually not bothered tho cause the other way is so much longer

I don't think its necessary to know how to do it without subbing in the values to the calculator. I do that too. Idk how my friend just remembers the outcome of sinθ, cosθ, tanθ at different θ values just by practicing questions, unless I was intentionally trying to remember them.

 

[cheesynooby]

guys when ur doing trig functions is it necessary to know how to do it without subbing in values into the calculator. For me it's faster that way but my teacher doesn't want us to do that cause we're in "adv". I'm actually not bothered tho cause the other way is so much longer

it's definitely useful to be able to know the values/the general shape of the common trig functions because it can also be useful in reverse
(like if you need to find the value of theta for which sin(theta) = 1/2)
it's still fine if you sub tho

 

[aerithgainsborough]

bro the LAT was so cooked im so glad i did it last yr coz i flopped this yr

 

[Study to success]

it's definitely useful to be able to know the values/the general shape of the common trig functions because it can also be useful in reverse
(like if you need to find the value of theta for which sin(theta) = 1/2)
it's still fine if you sub tho

but isn't inverse only for ext?

 

[Study to success]

I don't think its necessary to know how to do it without subbing in the values to the calculator. I do that too. Idk how my friend just remembers the outcome of sinθ, cosθ, tanθ at different θ values just by practicing questions, unless I was intentionally trying to remember them.

yeah screw my teacher I am gonna learn it for the sake of my teacher not harassing me every lesson but in the exam I am def subbing in values into my calculator. She just hates it when we memorise stuff and she wants us to "understand" cause that's how she found the "beauty" of math. But I just want to get it done the easy way bruh

 

[bigupsanky]

guys when ur doing trig functions is it necessary to know how to do it without subbing in values into the calculator. For me it's faster that way but my teacher doesn't want us to do that cause we're in "adv". I'm actually not bothered tho cause the other way is so much longer

wym they're pretty easy just gotta know the unit circle and values of each function for 0, 30, 45, 60 and 90 degrees for each function. if u memorise it (not that hard to memorise the same numbers over and over again) u'll be doing integration n stuff quicker. but obviously for like angles like 56 degrees or whatnot, you need a calc for it

 

[Study to success]

wym they're pretty easy just gotta know the unit circle and values of each function for 0, 30, 45, 60 and 90 degrees for each function. if u memorise it (not that hard to memorise the same numbers over and over again) u'll be doing integration n stuff quicker. but obviously for like angles like 56 degrees or whatnot, you need a calc for it

no but like graphing them. Like for example cos (x- pi). They're easy but I'm just not bothered

 

[f7eeting]

yeah screw my teacher I am gonna learn it for the sake of my teacher not harassing me every lesson but in the exam I am def subbing in values into my calculator. She just hates it when we memorise stuff and she wants us to "understand" cause that's how she found the "beauty" of math. But I just want to get it done the easy way bruh

tbh i just think everybody has a different approach. if it works, it works. all that matters is that you get the graph drawn, right?
although there are questions that are like "in order to get from a certain trig graph to another trig graph, how would you do it?" so i think being comfortable w trig translations would be quicker than a table of values in that case. but that isnt a very common question so i suppose you don't need to worry ab it anyways

 

[Study to success]

tbh i just think everybody has a different approach. if it works, it works. all that matters is that you get the graph drawn, right?
although there are questions that are like "in order to get from a certain trig graph to another trig graph, how would you do it?" so i think being comfortable w trig translations would be quicker than a table of values in that case. but that isnt a very common question so i suppose you don't need to worry ab it anyways

I know how the translations work but I just don’t know how to graph them without struggling

 

[bigupsanky]

but isn't inverse only for ext?

no but like graphing them. Like for example cos (x- pi). They're easy but I'm just not bothered

draw the normal cos graph for the domain -3pi < x < pi and just shift the y axis to the left by pi units there u go

 

[Study to success]

draw the normal cos graph for the domain -3pi < x < pi and just shift the y axis to the left by pi units there u go

Ik I just hate radians so much and it takes so much brain effort to know the values

 

[killer queen]

Ik I just hate radians so much and it takes so much brain effort to know the values

that's fair, it takes some time but honestly I got to a point where radians were easier to work with than degrees, you got this

 

[Study to success]

draw the normal cos graph for the domain -3pi < x < pi and just shift the y axis to the left by pi units there u go

But also if the domain is like (0,2pi) then the shape of the graph will be different cause then it will only be a certain section of it and that’s also kinda dificult unless I use the long method which is so annoying

 

[bigupsanky]

But also if the domain is like (0,2pi) then the shape of the graph will be different cause then it will only be a certain section of it and that’s also kinda dificult unless I use the long method which is so annoying

ye just erase the part thats not in the domain

 

[coolcat6778]

Fuckfuckfuck my Snapchat account is disabled idk wtf to do