How to find height and understand the formula for area of an oblique triangle
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- Опубліковано 20 жов 2024
- 👉 Learn how to find the area of a triangle. The area of a triangle is the measure of the region enclosed by the triangle. There are several methods that can be used to find the area of a triangle depending on the available information.
When the length of the base of a triangle and the perpendicular height to the base of the triangle are known, then the area of the triangle is given by half the length of the base times the height.
When the lengths of two sides of a triangle and the angle in-between the two known lengths are known, then the area of the triangle is given by half the product of the two known side lengths times the sine of the angle in-between the two known side lengths.
When the three sides of the triangle are known, a method of finding the area of a triangle known as Heron's formula is employed. Heron's formula is given by the square root of the product of half the sum of the side lengths and the difference between half the sum of the side lengths and the side lengths.
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Organized Videos:
✅ Law of Sines
• Law of Sines
✅ Determine 1, 2 or No Triangle
• Determine 1, 2 or No T...
✅ Law of Sines | Learn About
• Law of Sines | Learn A...
✅ Law of Sines | ASA
• Law of Sines | ASA
✅ Law of Sines | AAS
• Law of Sines | AAS
✅ Law of Sines Ambiguous Case 2 Triangles
• Law of Sines Ambiguous...
✅ Law of Sines Ambiguous Case 1 Triangle
• Law of Sines Ambiguous...
✅ Law of Sines Ambiguous Case No Triangle
• Law of Sines Ambiguous...
✅ Ambiguous Case Law of Sines | Learn About
• Ambiguous Case Law of ...
✅ Find the Area of an Oblique Triangle SAS
• Find the Area of an Ob...
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![Area of a Triangle in Trigonometry - Formulas, Examples & Proofs - [2-20-13]](http://i.ytimg.com/vi/jmky4U2o5rQ/mqdefault.jpg)
erm, this is why I hate maths, because it jumps from easy to the deep ocean in 3 minutes...
Exactly
it jumped from easy to deep ocean for you because you didnt understand a part prob, if you learn everything in order math is easy
@@doroncf5686 yes I am always missing big chunks and concepts so I lose the thread
true lmao
Ikr lol
My left ear enjoyed that very much. Thank you!
Let's all admit it guys, this dude is awesome! XD
Been coming here whenever I have had trouble with my work for 2 or 3 years now. And even if I was just missing something/ misread I always realize it watching these videos. XD
Thanks for always making awesome videos!
Yes this is mostly 10th and 11th grades math. However I always have to remind the students of older material taught
Omg... I do this in my 6th grade math! why
same
daurianne same lol
@@daurianne2216 when your teach forgets what your grade is.
Brian McLogan wha? I’m lookin at this for 6th
NOOO! where did I lose you?
???lose what
U lost me when u started doing the formula, got it now though
@@lunziforever5956 He commented a year later of uploading which means forgot that he has uploaded this video or he couldn't find this video
@@PremSalunkheApr16 no, i think he posted this comment before replying was a thing so he was replying to someone
Guys, I think he means that we are scrolling through comments instead of doing our work or listening to his explanation XD. Especially because this isn't pinned so we would have had to scroll to see this. haha XD
You're seriously amazing. I wish I had you as my math teacher! I always end up coming home, watching your videos and understanding it haha.
+Julia Ha just happy to be able to make a difference for you, keep up the hard work and let me know how i can assist you!
Thanks helped a lot with what I'm studying rn
I appreciate the help. first couple minutes was all i needed to finish my hw and studying
"Lets pretend to make this a right angle triangle. Right?" lel
ejano Crowsnatcher yes
Thanks a lot sir. I wish I had a teacher like you for teaching me maths whenever I come back from my classes I always see the video of what you have uploaded. Thanks a lot sir.
Thank you for the help! 🙏 😊 You are like an AMAZING math teacher! I wish you were my teacher -_- 😂😂 Thank you again for all your help! Your videos are awesome and I wish you good luck for your future and your channel! ❤️💫👍
Hey Brian mclogan, I’m in 7th grade and I don’t understand what you mean by H=BsinA. I know that means height=B something A. Thanks BTW I am a huge fan of your channel I use it every day if I need help with math, Keep up the good work! You look like a good math teacher, wish I had you .
Now ur like my favorite math youtuber i love ur vid!
Helping me again, thank you!!
Happy to help!
Thank you really needed before finals!
+Santiago Patino you are welcome! hope you did well
R u teaching a lesson and recording?
Genius
Reaper Ristov Yeahhh ikr
me sobbing watching this bc im so bad at math
👁💧👄💧👁
i cant see through my tears
you could just use herons for the area.. i came to find the altitude of a right triangle when given the side lengths
Explained what my teacher couldn't in couple mins thnx
Keep this up man! Great work. I wish you were my teacher.
RIP In Peace Seamus just trying to do my part to improve math education
thanks, you have been educated me
Harlem shake hehe. thx for the help btw
freddo 1614 Dunno man, I commented a year ago. No way I could remember why I commented that..
Lol
Morten because a guy in the background said it i was going to comment that
At last, after years of waiting i've solved the mystery. xD
Your movie is good to me i Love you
how do we solve that when given sides are not a,b,c, just another letters?
The Harlem shake comment at 1:45 took me back lol
Very good explanation sir 👌 ❤️ ❤️
lol what year/grade is this? learning how to find the area of a triangle and trigonometry at the same time?
I live in Australia, we learn areas in about year 7 or 8 and learn trigonometry (sine, cosine, tangent, etc.) in year 11.
MrFunnylicious 11th grade
This is what I have to learn. I'm in 5th grade. Note: The school I go to is very school-forward and academically driven.
Meh too 6th grade
Ahhh I don't think I learned this until 6th grade. I came here because I thought I was missing something, but turns out the numbers on my pages didn't print out nicely because they were in yellow. XD But ahhh 5th grade???
Genius! Thank you so much.
Thank you sooooooooooooooooooo much !!!!!!!!!!!!!
Scratch that you lost me .
Not hating but like imagine going to a cool meeting and wearing a shirt that says math videos on it XD
Thanks for the great lesson sir
+Jeremy Abenojar you are very welcome! happy to be able to help!
I just proved law of sin(A)/a = sin(B)/b. This was one of my channels on my way to this point. Super nice
Ok so I have geometry and there is this question where the height is 5m but there is no base? What do I do?
One question, why do we multiply the other height by the base on the other one??
thank you this really helps ☺️
Hey i have a question um what mode do i put my calculator in?
+Stiyg depends on what type of angles you are working with, if degrees use degrees, if radians use radians
Use Sin()
I'm here just tryna find out how high do my mincraft field need to be in order for the water to push it down.😅
(Corona virus)
What
@@kotarojujo6365 the
Bilakshan Purohit wa
@@kotarojujo6365 edit your reply and write "hell"
@@Redditard lemme do it for you
*Hell*
You help a lot to me THANKS
This helped me fo my 4th grading at 4th grade
I do independent studies and your channel helps me a shit ton, thanks my dude!
study pug ads: do the videos from 2000 really help u?
me: this guy's video helped me then u ever could
Nerd.
I have this triangle, given the lengths
Base is 60, 45 & 30 but it doesn't have height nor any degree and I can't figure how to get the height. 🤔🤷
you're a godsend
Thanks so much
could you please help me? How do I find the INTERIOR height of an obtuse triangle? I'm not given any angles, I just know the biggest side is 20, and the smallest 9, and when you add those two dotted lines at the side to make the triangle a "right" triangle, that height is 12.
sorry I am only able to focus on the problems for my classes
love this video
Can you please help me? I need to find the height of a triangle. It is a scalene triangle. How would I do this? I don't need to find the area; just the height.
+Marc Weiner I do not know what information you are given, or what chapter your question is in. There are many different ways based on this information. Most likely you will need to draw a line that represents the height(perpendicular bisector) and use trigonometric ratios (sine,cosine,tangent) to identify the missing side of the right triangle created
Mr. McLogan's Math Channel Yes I understand now. I asked my math teacher and she said to use trigonometry. I didn't even think about using it. Thanks!
saved me from getting my homework wrong. thx 4 the help
Thank for the help
Thanks for the videos! I'm learning more here than from my own math teacher! He SUCKS and should be teaching!!! For that I have to suffer!
sorry to hear about that, but happy to be here for you!
who here because this guy can teach better then our teachers
What if i dont know the area?
If you don’t know the area, solve for it by doing 1/2 of A times B.
The area for height is
H=BsinA
Btw what does sin mean?
I mean formula
I wish he had given some examples...
It sucks how 9th graders were learning this stuff in 9th grade and I’m learning this in 6th. I’m struggling with math right now and I have a test in less than a week. I’m scared I’m going to do bad 😕
Bro im in 6th grade and learning this. This is soo hard
@@hamsakev4224 Wish you the best of luck, you’ll be needing it
Haha thanks. So far not so good-
@@hamsakev4224 We were doing easy stuff for a couple weeks then it just changed to trial and error 😥 helpp me 😭
Same
mare madad karna ka laya shukria
+Asma Khan thank you
Thanks
I'm trying to get my ged, and took the pre test. that I have to pass to do the actual ged test, last night. I had a question similar to this ... and I got stuck ... helped a little. I'm sure I'll remember next time
+Prisila keep working hard, happy my videos can help you out
+Mr. McLogan's Math Channel thank you and of course. any help taken is progress
I'm learning this in grade 9 academic math
TGF x awesome! keep it up
I’m learning this In 7th grade
You are the man
just happy to be able to help
What level of algebra is this or geometry
i know we studied this during trig. It might be geo or algebra 2. I'm leaning toward geo though.
It literally says #trigonometry right beneath the video
Thanks you help me with my 5 th grade hw
Randy Orton taking maths lecture 🦧
Wtf💀I was doing well until I found this video
What is sigggggnnnn 😭😭😭😭😭
Sine or sin is a function in ur calculator
If math was a swimming pool
People step into the pool 10 steps later there 999999999999999999999999999 miles underwater and drown ( getting a f )
im a yr7?????????????
You are nice and I Love you
i Love you and you make me happy
@@barakapeterb2592*???*
@@barakapeterb2592 wht
Flash back to 8th grade why did UA-cam recommend.
Can we use Pythagoras theory
only for right triangles
Thanks I am from India 🇮🇳
awesome! you are very welcome Shobhit!
Ty
You lost me at the beginning. How did this guy get merchandise
So confusing
That fake ass acting at the start lol 😂😂😂
can u help me I am 10 years old for right angle x and 27 degrees today is my test in Guyana plz
best of luck! unfortunately I do not have enough information on your problem to offer any advice, most likely will need to use your trigonometric ratios
This saved my arse
Base*Height/2=Area
Me watching this before exams 👁👄💧👁
i got confised in the "sin" part
2:25 what? xD
hers an easy one A=LxB over 2
yes, that is where these formulas are derived from
My dad printed these sheets for extra work at home and it says grade 6 🤨
what sheets?
@@brianmclogan 🇪🇷🇪🇷🇪🇷
😷😷😷😷😷🇪🇷
what if you only knew b and wanted to find the height
+Dana Steele just use the formula, area=(1/2)base*heighet
S C asked how to find height.
I'm seeking the same answer, and your reply wasn't at all helpful.
(How can we multiply base times height if we still don't know what the HEIGHT is?)
I'm is this college math cuz our school has this and I'm in middle school and I do this already
why am I learning this in 6th grade
not sure
Instead of azxhdnsgsj write numbers
I did not understand a thing
Hello
I am from the future
is this a teacher?????
BOOOOOOOOOO👎👎👎👎👎👎👎👎
Not helpful
Sorry, but this is sloppy teaching. It's no wonder kids are confused.
sad sad sad kid soooooooooooooooooooooooo confused
🤯🤯
u should be more strict
every day, every class, every situation is different
Lol what
Your no help