I think I can speak for everyone, we're very thankful and grateful to have someone like you, who cares enough to teach students/people around the world!
So helpful! I'm taking pre-calc online and nothing would make sense without you! Thank you so much for taking the time to clearly explain everything math!
hey sir i moved countries and i’m really struggling with math because of the language switch up i don’t even know some basic math terms which sucks because i used to be good at math and i never learned math in english but watching your videos make me understand even without you explaining some terms, thank you so much
After months of crying because I didn’t understand whatever the hell my old-as-dirt precal teacher was teaching, I finally understood it after not even a 2 minute long video. Bless you sir….bless you
Thanks for the Video, my teacher has a thick accent so I could not understand a word he said, but you explain it so easily. Thanks for saving my grades!
You should upload your videos to Udemy man these are awesome video they are helping me so much. I am a computer Science Student and my wires get crossed between programming and math. I have informed over 20 of my classmates about this channel they have all subscribed. Thanks man you rock!
I do have course on Udemy actually and currently working on adding new courses. Glad my videos have helped and really appreciate you spreading the love. Wish you all the best, keep up the hard work
Ser do you have a video about finding the measure of an exterior angle formed by two tangents given the inscribed angle and central angle of the circle
An engineer is asked to design a water sprinkler that will cover a field of 100m2 that is in the shape of a sector of a circle of radius 15cm. Calculate: i) the angle through which the sprinkler rotate. [3] ii) the arc length of field (sector of a circle). [2] HELP HERE
If the arc length was and the radius was 1. So you get 4/1 radians. Do you have to simplify the fraction?And would the answer be 4 radians please help someone?
but if the rule of radians is that when the length of an arc is equal to the length of the radius angle theta is 1 radian how can it be that l=rθ (when r is in radians) ??? I dont understand how can s and r even be different? oh. r is not in radians here duh but when r is in radians i still dont get it
I HAVE A QUESTION. What if you only have the arc length which is 3/5. I have to get the radian but my friend told me I have to get the arc degree then to radian. But the only measurement given is 3/5 as the arc length of the circumference of the circle :(
What are you solving for? the radius or angle? if the angle you just need to multiply 3/5 by 360 for an angle in degrees or 3/5 times 2pi for radians. To find the radius you will need to know the circumference or additional information
ok sir if our angle is 4/5 4/5 =.80 arc length =60 R =75 when we apply circumference formula = 150*3.14 = 471 = 471/360 = 1.308333333 = 1.308333333*.80 Ans = 1.046666666 please sir can tell me where is the probulam there we have Ans 60
The fraction of 4/5 is 0.8 pi radians. To convert it to degrees you would multiply 0.8 π radians by 180 degrees and divide by π. So, like this: 0.8 * 180 / π. This is because 180 degrees = π so the radians cancel out.
so how do I get this answer back to π? Like when you convert degrees to radians. How to I convert theta to proper radian? I know that sounds stupid, but my teacher doesn't explain anything we learn in class well. I just want to know how to get actual radians because apparently that isn't correct. I have no idea what I'm doing wrong so I believe it is theta. (I have this exact same problem) I think it has to be in π rad.
radians can be as number or in terms of pi. When it is a number think of it as the number of radiuses wrapped around a circle. theta=2 is the angle measurement of two radiuses wrapped around a circle. Where as angles in terms of pi are fractions in terms of a half circle. Since there it takes pi radiuses to make half a circle if you divide that by two you have a right angle. You can similarly explain the other fractions of pi
![Radians, Arc Length & Sector Area of a Circle - [2-21-1]](http://i.ytimg.com/vi/lcuxPNBXhlY/mqdefault.jpg)
I am not even joking, you sir, have helped me more on Calculus within 2 min, than my teacher in almost a year; for that, thank you!
you are very welcome! happy to be able to help
Mr Mclogan can you be my teacher
Amen, Osvaldo!
I feel the same way!
So true, so true
I think I can speak for everyone, we're very thankful and grateful to have someone like you, who cares enough to teach students/people around the world!
u got red caps on blue markers and blue caps on red markers
wtf
Ææææ
Why u pay attention to that lmao?
To convert ... degrees = (180/pi) * radians
absolutely, happy to help, keep up the hard work
@@littobud wtf
@@littobud fuck off
@@littobud Suck your mom pussy
@@mydalisss huh
So helpful! I'm taking pre-calc online and nothing would make sense without you! Thank you so much for taking the time to clearly explain everything math!
Omg you taught me what my math teacher failed to teach anyone in almost 2 hours. You've helped me in pre calculus thank you.
Checking in. It is 2021. Thank you Professor Mclogan. Your videos have helped me get through Trigonometry during Covid.
learned more from you within the past 20 min of flipping through your vids for help thsn my teacher this whole unit
: ) you made my day
I hope you know that you are my savior! Words cannot express my gratitude for your videos. Thank you so much!
No cap this helped a lot yo. You’re a real one
Samantha Golper why are you talking like this
‹ TrillMixedTJ › lmao
THANK YOU SO MUCH MY TEACHER DIDNT TEACH US THIS AND ITS ON THE HOMEWORK THATS DUE TONIGHT
You saved me so much reading man thank you!!!🙏🏽
I dont comment much but seriously you make things so straight forward and easy! You have helped me a lot and you dont even know it. Thank you so much!
you are very welcome Kyle! Happy to be there for you
bro has helped me so much, literally never seen any of this before lol
happy to be able to help you out!
Thanks so much I don't know how old this vid is but the vid and the coments really helped with my homework
awesome!
hey sir i moved countries and i’m really struggling with math because of the language switch up i don’t even know some basic math terms which sucks because i used to be good at math and i never learned math in english but watching your videos make me understand even without you explaining some terms, thank you so much
Maraming salamat po!
Who is here from the videos that has helped show with your geometry classes, algerbra 1:2 and now your back for pre-cal! ✋
Thank you sir !
After months of crying because I didn’t understand whatever the hell my old-as-dirt precal teacher was teaching, I finally understood it after not even a 2 minute long video. Bless you sir….bless you
Your videos are really helpful!!! Keep up the good work
thank you will do
This just saved my a** on my college trigonometry hw, thanks!
awesome! happy to help
Thank you my hero
Thanks for the Video, my teacher has a thick accent so I could not understand a word he said, but you explain it so easily. Thanks for saving my grades!
go get it, let me know how you do
I don't know what r u telling plz solve my question.
Without this guy I would be failing my senior year of high school thank you soo much!!!!
Man, thank you very much!
hi sir this is Aishwarya from India ... Sir u hav made this concept so easy for me that I can't express my happiness in Words Thank you so much Sir..
This man is the only one that teaches me math and helps me understand it unlike my teacher.
So if I multiply it by pi over 180 it becomes radian form?
Thank you 🙏 hopefully I can get a good grade now that I’ve figured out the formulas
This man got me a B in precalc, and I will forever be grateful
been stuck on a question for hours because my teacher is a bit confusing but you sir have made my life easier 🙌🏼
Do we substitute the 4/5 to find the actual angle?
btw your videos are my life yo!
happy to help!
Learning this in 8th Grade, thanks a lot sir
this saved me thank you
Thank you for posting this, helps a lot.
awesome! happy to be able to help
Thanks again im in precalc/trig right now as a 10th grader and these have been helping me out so thanks again
you are very welcome! happy to be able to help
Very nice Sir
Thank you so much, with all this Algebra 2 homework during this time, this video really helped me get through it all 😊
Are you serious my teacher is saying i'm in per algebra and that i'm behind but i'm having to do this :/
@@sickenedbaddyboy Oh yeah I'm not sure about your school, but I am in Algebra 2 and this is what we're working on at the moment
i know this video is old but thank you! helped alot :)
happy it still is able to help you out!
Spot On! Thank you!
+Joseph Andrew Monreal you are very welcome! happy to help
You should upload your videos to Udemy man these are awesome video they are helping me so much. I am a computer Science Student and my wires get crossed between programming and math. I have informed over 20 of my classmates about this channel they have all subscribed. Thanks man you rock!
I do have course on Udemy actually and currently working on adding new courses. Glad my videos have helped and really appreciate you spreading the love. Wish you all the best, keep up the hard work
you wouldn't happen to have a video on angular velocity with only the angle given like - turns through an angle of 45 deg each sec??
That awesome! btw I will look up your courses as well
I do not believe I do, feel free to ask any question you have on any of my courses
Thank you!!!!!
Good information.thanks...
you are welcome!
I hate math but now I veryvery love it thanks for tutorial:-)
You are very welcome!
why couldn't you be my math professor !!! so helpful
happy to be able to help
Thx u really helped me a lot ,It was so simple
you are very welcome!
good man right here
thank you so much
THANKS
You are awesome sir thanks for the help
happy to be able to help
Very useful
happy to help Nazrin!
Brian McLogan how to find central angle without arc length and it only gives me the area. Can you help me
probably need to set up a ratio of the area of the sector to the area of the circle and degree of the central angle to 360
Brian McLogan OK tq
The world is crystal clear now
omg just what i needed thank you!
you are very welcome!
Hi. How did u get the 60 sir???....
Thank u very much.I didn't know that it was quite easy to solve it until I saw your video...It helped me a lot,thanks again☺️
You are very welcome!!
thanks so much, made my day
Thanks i needed that
you are very welcome John!!
You are a life saver! Thanks :D
You’re a god
G.O.A.T
Just a quick question how do I find the central angle if I only have the area of a sector?
Sorry focused on summer teaching right now
Yeah I'm taking trig in the summer but thanks anyways
thank you!!!!!!!!!!!
Ser do you have a video about finding the measure of an exterior angle formed by two tangents given the inscribed angle and central angle of the circle
thx sir God bless
cheers!
what if its finding the anwer in terms of pi?
Jomm.-. Divide that sucker by pi and you’ll get like pi/4 or something like that
An engineer is asked to design a water sprinkler that will cover a field
of 100m2
that is in the shape of a sector of a circle of radius 15cm.
Calculate:
i) the angle through which the sprinkler rotate. [3]
ii) the arc length of field (sector of a circle). [2] HELP HERE
If the arc length was and the radius was 1. So you get 4/1 radians. Do you have to simplify the fraction?And would the answer be 4 radians please help someone?
depends on the situation, question and teacher
In What measurement is the length of the intercepted arc? 60 radians? 60 degrees? How do I solve this when given S as inches?
+Mr Bean angles must be in radians, the arc length is in units
How abt find the angle of the minor arc in radian when the length of line segment in the minor arc and radius is given.
How do u find the central angle without the arc length
precalc test= brian mclogan time
How do I find the arc length
I have to understand a paper, there is (may be some) term I believe you are familiar with. may I have a discussion, sir?
Hi Kamal as much as I wish I could help, I am only able to focus on what I am currently teaching
How did it become 4/5?
but if the rule of radians is that when the length of an arc is equal to the length of the radius angle theta is 1 radian
how can it be that l=rθ (when r is in radians)
??? I dont understand
how can s and r even be different?
oh. r is not in radians here duh
but when r is in radians i still dont get it
I HAVE A QUESTION.
What if you only have the arc length which is 3/5. I have to get the radian but my friend told me I have to get the arc degree then to radian. But the only measurement given is 3/5 as the arc length of the circumference of the circle :(
What are you solving for? the radius or angle? if the angle you just need to multiply 3/5 by 360 for an angle in degrees or 3/5 times 2pi for radians. To find the radius you will need to know the circumference or additional information
I need to find the radian, but that's all what was given. Worse, part it's not in the book nor in the internet x.x
Multiply 3/5 by 2pi and that will give you the angle in radians
hello how will you solve for the central angle given that the height of the segment is 9.15 and the span of it is 36.6?
so r=9.15 and s=36.6?
Brian McLogan no i was saying that the height of my arc is 9.15 .. then its span si 36.6 .. then my radius is equal to (R-9.15)
What if the chord of the segment was given and the radius was given, the how would we approach the problem?
beautydiva110 depends what information are you trying to obtain?
But if only radius is given then how can I calculate major arc of circle
HOW ABOUT THE 75??? HOW DID U GET IT SIR??....SORRY I'M NOT THAT GOOD AT MATH....AND I DON'T UNDERSTAND THINGS W/O DETAILED EXPLANATION..
ok sir if our angle is 4/5
4/5 =.80
arc length =60
R =75
when we apply circumference formula = 150*3.14 = 471
= 471/360 = 1.308333333
= 1.308333333*.80
Ans = 1.046666666
please sir can tell me where is the probulam there we have Ans 60
sorry, only able to focus on what I am currently teaching
I just want to ask that my method is wrong or right
please
How do you find "theta?" If all you know is the Circumference
but what if u don’t have a radius what do we do :(
So, if I were to convert the central angle from your video from the fraction (4/5) to a number...would I get 80 degrees. Please leave a comment
How?
The fraction of 4/5 is 0.8 pi radians. To convert it to degrees you would multiply 0.8 π radians by 180 degrees and divide by π. So, like this: 0.8 * 180 / π. This is because 180 degrees = π so the radians cancel out.
What about when you are given the area instead of s?
use the formula for area to find r
so how do I get this answer back to π? Like when you convert degrees to radians. How to I convert theta to proper radian? I know that sounds stupid, but my teacher doesn't explain anything we learn in class well. I just want to know how to get actual radians because apparently that isn't correct. I have no idea what I'm doing wrong so I believe it is theta. (I have this exact same problem) I think it has to be in π rad.
radians can be as number or in terms of pi. When it is a number think of it as the number of radiuses wrapped around a circle. theta=2 is the angle measurement of two radiuses wrapped around a circle. Where as angles in terms of pi are fractions in terms of a half circle. Since there it takes pi radiuses to make half a circle if you divide that by two you have a right angle. You can similarly explain the other fractions of pi
what if radius in m and arc length in cm?
have to convert so they are the same
sir How did you get the 4/5 in 60/75
divide 60 and 75 by 15
how do I find arc distance when kg is given and mass too is given
Not completely sure Michael. My class does not investigate those types of problems
my answer didn't come out right, my radius is 3 and my arc length is 8 im trying to find the central angle too but every answer I submit isn't right
does your angle need to be in degrees? in radians it is 8/3
ty ty
you are very welcome!
Khan academy failed to teach me this.
sir, try daw mag wig aron mag trend ba
I don't get it. HOW??? why 4/5???
what if the radius is 14m and the arc length is 12?
How find S
How find S value