Learn how to find the sine of 5 pi over 4 without a calculator

👉 Learn how to evaluate trigonometric functions of a given angle. Given an angle greater than 2pi in radians, to evaluate the trigonometric functions of the given angle, we first determine the smallest positive coterminal angle of the given angle. This we can do by subtracting 2pi or a multiple of 2pi from the given angle.

Coterminal angles are angles with the same terminal side. After obtaining the coterminal angle, we plot the angle on the x-y-coordinate plane and with the help of the Pythagoras theorem or the special angles, we can evaluate the trigonometric functions of the given angle.

Organized Videos:
✅ Trigonometric Functions and The Unit Circle
✅ The Unit Circle | Learn About
✅ Points of the Unit Circle | Learn About
✅ Angles of the Unit Circle | Learn About
✅ Trigonometric Functions of the Unit Circle
✅ Find the Point on the Unit Circle
✅ Evaluate Trigonometric Functions Using the Unit Circle
✅ Evaluate the Six Trigonometric Functions Given and Angle
✅ Evaluate trigonometric functions using a calculator
✅ Evaluate trigonometric functions using identities

Connect with me:

#trig #unitcircle #brianmclogan

[mackenziebeaulieu]

I love how you still reply to people's questions years later

[lmaoannie]

I've been stuck on this for weeks!!! In 1.5 mins you changed my brain thanks woah

[HhHh-xpvi]

This teacher teaches the thing that my teacher never talk about. I hope my math teacher come see this video. Man.

[BTxADI]

Thanks sir Now I reached In class(strandard) 10th And was facing Problem in this part of Basic maths.... the video Is 8 years old but still helped a lot ❤❤

[abbykryk]

just finished crying then I watched this and immediately stopped.

[Priox_]

I am indian so i was daily see your videos you are the great sir thanks

[hasratsingh]

Thanks this will recalled help with my exams

[sagnikdebsarkar]

Just wanted to ask this out of curiosity..
In which class/age is this taught in your country?

[mr.unknown]

That's too Simple!!!
Yay!!! Now I can just kill such kind of questions. Thank you very much sir❤️❤️
❤️ from 🇮🇳

[BlackJoker]

im still stuck and cant find a solution. I'm doing cos pie over 12. you said that half way around would be pie which I got that so 4 times around would be 4 pie over 4. but I don't understand how to break down pie over 12 and the sample used 5pie over 12 and said it was equal to 2 pie over 3...I'm soo confused.

[-smp-scientificmethodpersp]

How do I do pi over 8? What's the reference angle? What triangle do I use?

30 or 45 degrees is obvious

[bushido]

Okay, now Brian is speaking my language.

[babylongate]

0:06 No, (half around circle) is Pi, not all around.

[mdshohelhassanansari]

Sir good explain i understand vert easily thnxx

[all-rounderchannel]

How did 1/undrroot2 convert into underroot2 /2

[christasiarawls]

who else is watching this in college. my question is how do you get 4pi/4 to subtract it from the reference angle

[infoosed]

How does 1/rad2 =rad 2/2
How did you do that

[khushichopra]

It can be done by a very simple no need to create so chaos

[Stevenpa]

Where the fuck did 5#/4 come from in the 1st quadrant, isnt it just pie over 4?

[yadagirimitte]

Sin is +ve in 4th quadrant too why didnt you taken it in 4th quadrant