Angle chasing(basic)

[nova fiber]

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[midnight garnet]

i cant see it, oculd you please zoom in/make clearer photo

?

yes ty

do you know what a cyclic quadrilateral's opposite angles need to sum to?

[midnight garnet]

180

then somethings wrong

could you send a photo of the shape

alr

where did you get this question from?

alr

aapne nahi bhola ki aap hindustan se ho

🤣

ye to bohot simple hai

🤣

aapko pata hai aaj kya din hai?

hooray

anyway

back to this

do you know circle theorems?

im in class 8th 🤣

[sly roost]

maybe you can try making a circle around it

theres this theorem

where in a triangle in a semi circle

the angle touching the arc section will be 90 degress

angle abc will be 90

try placing something as the diameter

wait let me try in a bit

yeah its easy man

so as i was saying just use the property

wait ill show you

wait i dont think this property works

cuz i am getting the angle in decimals

theta is 22..5

whats the answer though?

[sly roost]

so 2 theta would be 45 according to me

oh its correct

nice

aight

[midnight garnet]

thats not a theorem tho

its angles in a semicircle are always 90 degrees

[sly roost]

same thing 😭

[midnight garnet]

nah

its not

an arc is not a semicircle

[sly roost]

i just said the arc part of the semicircle

[sly roost]

^^

[sly roost]

^

[midnight garnet]

"arc part of semicircle"

tf does that mean

[sly roost]

the curved part of the shape

[sly roost]

i didnt make dn line in the 2nd diagram

but that dc and da are equal according to your question

so those will be the radius

that means its isosceles

thats why the angles are equal

wait a minute

i messed up

i forgot about this

aaah

the angle will just be theta

[sly roost]

now just add one more theta to this part

so its 90 + 5 theta = 180

theta is 18

2 theta is 36

[sly roost]

according to your question

or diagram

nc was equal to pn

so that would be the radius on either sides

if we put the entire pc as diameter

and about point d lying on the semi circle

every triangle in a semi circle will be such a kind

its the thales theorem

https://www.youtube.com/watch?v=ziL3ObCeRfc

[earnest stream]

@earnest stream

I proved AEDC cyclic

The thing was that triangle EBD ~ ADC

So, angle BED=angleACB= 2θ

angle EDB=angle BAC

Angle EDB= 90-2θ from the triangle BED

so angle BAC=90-2θ

angle EDC=180-(90-2θ)

angle EDC=90+2θ

add angle EDC and angle BAC
We get 90+2θ+90-2θ=180

Which are also the opposte angles of quad AEDC

Hence, AEDC is cyclic quad

25 days for IOQM left, dammit

[sly roost]

no

why will nd be related to it

[sly roost]

@earnest stream you can always prove it too

but i think its pretty obvious

[earnest stream]

Yeah

[hexed grotto]

@toxic agate has given 1 rep to @sly roost @icy olive

[earnest stream]

I've 200-300 questions left

[sly roost]

Can I participate in ioqm 💀

[earnest stream]

Are you Indian?

[sly roost]

I mean they don’t allow 12th

[sly roost]

Yes

[sly roost]

I think

[earnest stream]

They do allow 12th

But registration period is over, so bye bye.

Yeah

Its ioqm level and PYQs

yes

You can

[sly roost]

Oh

[earnest stream]

Make sure to do the 100 AIME problems at the end

[sly roost]

Nd will also be the radius

[earnest stream]

Have you joined the vedantu course?

Its free

[sly roost]

Right I didn’t make the line in the 2nd diagram

[earnest stream]

Then do join

You should give mock tests now

Its not the best time to start new topics

[sly roost]

The last time I went to an Olympiad was literally in 2019

😔

[earnest stream]

Oh damn....

Then...

Focus on geometry

Are you clear with geo concepts till grade 10 levels?

[sly roost]

What’s the portion

[earnest stream]

If yes then do cosine law, sine law

menealus, ceva , stewart theorems

and do try AMC problems

You might sturggle to do aime prob

[earnest stream]

Geometry, NT, Combi, Geo and miscalllenaous

[sly roost]

Seems easy

That’s all

[earnest stream]

Yeah

Do try IOQM 2023 Combi

[sly roost]

Sure

[earnest stream]

Its way hard than fake Combi which comes in Jee

[sly roost]

Combinatorial stuff is probably the easiest stuff

In olympiads

Cuz it’s all based on number theory

Even binomial

[earnest stream]

Really?💀

[sly roost]

There’s this book

Art of problem solving

You can even see their lectures on YouTube

It’s good

[sly roost]

That’s easy tbh too

[earnest stream]

I've heard about it

If I clear IOQM, then I'll give it a try for RMO

[sly roost]

Oho good luck

Just be calm

I have been to itmo got 4rt in my category

[earnest stream]

What's itmo?

Do you been inmo?

[sly roost]

International teenagers mathematic olympiad

[sly roost]

I do not know what’s that

I was in some other country before

[earnest stream]

Oh

INMO is the 3rd stage for IMO in india

[earnest stream]

Ahh

[sly roost]

Oh

[earnest stream]

ioqm is the 1st stage....

[sly roost]

Well is it possible to directly register of rmo…

I am kinda bored here

[earnest stream]

It isn't...

[sly roost]

Sadge

[earnest stream]

You gotta clear ioqm first mate

Are you in India now?

[sly roost]

Yes

But registrations got over yeah

[earnest stream]

Yup...

Will you give JEE?

[sly roost]

Yep

Bitsat and jee

[earnest stream]

Ahh

Chemistry is so awful

[sly roost]

I am just gonna apply for iiit and bits here

Might try in for iitb

[earnest stream]

Ahh cool

[sly roost]

And other than that I am applying to overseas colleges

[sly roost]

Bruh it’s getting easier now

I used hate it

It’s all on your memory

Math is easy but it’s just frustrating

Too lengthy

Physics is going down they keep changing teachers

Which grade?

[earnest stream]

YEAH!

[earnest stream]

10th

[sly roost]

Oh

[earnest stream]

Is it?

I do jee advance math problems sometimes...

[sly roost]

Yep

[sly roost]

Awesome

[earnest stream]

I like them though

For mains, time is the issue

[sly roost]

They are not so hard all you need is time

[sly roost]

Exactly

[earnest stream]

Exactly

They don't even require high level of thinking (jee mains)

[sly roost]

Tenth chem is pretty easy tbh

[sly roost]

How!

Oh

Some do

[earnest stream]

Yes, but our teacher shit us

[sly roost]

It’s like they interlink bunch of stuff

[earnest stream]

Physics in jee mains is too easy

[sly roost]

And they just ask more stuff before you get to the actual issue

[sly roost]

True

If you realize it’s also pretty easy to guess physics answers

😭

[sly roost]

Makes sense

[earnest stream]

Yeah lol

[sly roost]

What I would prefer is read your texts

Text book

Or you can watch audiobooks

If it’s boring

[earnest stream]

Yeah

[sly roost]

And then just write down all the important reactions, color codes and stuff

And just keep revising

[earnest stream]

Actually, I'm too addicted to maths

[sly roost]

And just go through notes

And questions

[sly roost]

Literally

Math is fun

[earnest stream]

And that's why I dont give a fuk abt other stff

stuff

[sly roost]

Others just feels boring tbh

[earnest stream]

Physics is cool

[sly roost]

lol

[earnest stream]

History is also good (I like it)

[sly roost]

Only if it’s practical

[sly roost]

Naziii

That’s the history I like

[earnest stream]

JAAA HAIL MY LEADER

[earnest stream]

TOO RELATABLE

[sly roost]

Economics lang math are fun

Even geo

Indeed

Ight see ya gotta code stuff

[earnest stream]

ya bye