First week of pre-cal and this class already got me in a headlock ☠️

My online teacher literally doesn’t teach at all so I have to find videos like this to help memorize things on the tests. Thanks

When your taking calculus and forgot everything u learned in pre calc 💀

I’m a math teacher studying for certification exams and this helped a lot. Thanks

This is the best tutoring I've ever received and it took less than one minute.

Just remember that the coordinates are (rcosθ, rsinθ) where r is the radius and θ is the angle made on the x-axis.

bro just saved my grade

What a great way to help memories the unit circle. 👍👍

Just remember that memorisation is not the point of maths and so I recommend to use a right isosceles triangle and equilateral triangle to derive these formulas, whilst also using the circle theorem that right angles triangles fit inside a semi circle. This uses logic instead of memory

This man is a hero

Ok I see you big dawg big brain activities

I just remember 13 on the top and 31 on the bottom

Great trick to memorizing the coordinates of where the terminal sides of 30, 45, and 60 degree intersect the unit circle. Thanks for this. One thing though, if you ever want to edit something, you say "square the numerators" when really you are taking "the square roots of the numerators." One of my students at the university pointed this out to me. But thanks again.

Bro just said "Un, dois, treis..."

Thank you bro it's very helpful

Bruh I was just taught this today what is this algorithm

This is amazing. Allāhumma baarik, nicely done. ✅

its better to just understand why it is this way though

Trigonmetric Expressions are killing me rn

Thanks bro. You made it easy

when was this when i needed it like. three weeks ago

Wow thanks mate that actually helps a lot

Like it really helps to memorize this tnks

Why do we even have to memorize this 💀

Very good, sir 👍

You just save me alot of stress, preciste that 😢

What about for different angles?

Thank you sir!

Just remember coordinates as ( cos theta, sin theta)

Should we flip those coordinates or just leave the answer as it is

0° or 360° = 0 radians or 2π radians 180° = π radians 90° = π/2 radians 60° = π/3 radians 45° = π/4 radians 30° = π/6 radians

90 degrees divided by 4 is 22.5 degrees. 22.5, 45, 67.5, 90

I never thought of it thar way. Wow

Nice. Very nice.

What about the either sides

Oh this is good cause I’m taking precalc!!!😫

i’m actually cooked for highschool man💀

Thank u so much bro ur the best❤

Thanks man 👍

Thanks.

the rays are clearly wrongly drawn... if it's 1/2 draw it at 1/2 !

tysm!! 😮

rcostheta,rsintheta where r is radius of the circle

Unit=(cos x,sin x)

You don’t need to memorise it bro the unit circle and circular functions and graphing trig functions is about the easiest thing I’ve ever done

So my question is are these numbers repeated but negative around the circle?

But that's just one quadrant 🤨 I was expecting the full thing in under 1.5 minutes somehow 😬

Parametric co-ordinates

1 2 3 , 3 2 1 2 under the bar Square root where have no 1

It's just cos() and sin()

1 2 3 3 2 1 todo mundo sobre dois raiz em cada um😂

Plz device name...uh r using...plz

They are practically the same thing I mean it is really easy to know these

genius

YES THANK YOU HOLYYYYYYY

Took trig in college and he said we didnt need to know this come time for calc boy was he wrong

Why divide by 2? Are you teaching or just doing math?

this isnt even difficult you just have to see the points horizontally and vertically

I'm in algebra 3 not even calc

May pag asa pa😅😅

what about the other 14

LMAO this "simple stuff is why I dropped out… No thank you lol

Why do we pay for school but learn from youtube 😢

Bro what is this nonsense, math is getting wild

Uh, no. Just learn the logic behind it.