I remember doing this in high school, but that was 30 years ago. I am glad this channel explains it well. My teacher I had didn't do as well. I got an A in the class, but I never really understood what I was doing. I remember looking up on a chart to find out the degree. Could you do a video explaining how that number is calculated instead of just using a chart? Thank you in advance.
Hello, back in the 80's i was in hi school cabarrus catholic college in neg occ ph. I still remembered those abreviations of sine ,cosine and tangent. Calculator was scarce we use the list in a little book trigonometric table.. it was awesome and challenging..
I dug out my slide rule to see if I remembered how. It took me a while to realize that the T scales were themselves the degree values, and the tangent value is to be found on the C scale. So T is the arc tangent of C, once you figure out which T scale is the appropriate one. I got more than 3 significant digits, but not quite 4.
I really appreciate the simplicity of your lesson. When I was in grade 12 43 years ago, they made it so complex. Just tell us how it is done was what i wanted to blurt out. Thank you. What angle does tan sove or?
He is a very good teacher. Thank you very much. How about if we forgot to bring calculator and no calculator available around. How to solve it without using calculator?
Is there a way to calculate the inverse tan without a scientific calculator, I am hoping there is a way to work out my latitude by measuring the length of a shadow at solar noon? TY.
I wish I would have been in your class. I had a scientific calculator but had no clue how to use the thing. I dropped trig in college. I’m learning now so maybe I can help my grandkids when the time comes.
FOCUS ON THE WHY? I’m 59 and l agree w most of the posts…”wish l had him as a Math teacher.” Respectfully,kick it up a notch! If you want real IMPACT (however u want to measure it), spend an equal amount of time on what most students are puzzled by on WTF does it matter. Get people to love/yearn math/science’s. Show them how (examples) it impacts life as they would know it. That’s the magic! Again, at 59 with a smaller window of time, there’s a greater appreciation, a hunger for “ what l don’t know…but should.) 😉
Ha ha this is not a 3,4 5 triangle it is a 3,5,h triangle h=sqr(9+25) which does not equal 6 but it is close, it is not a 30,60,90 degree right triangle, lol
I did sheet metal layout and had a little pocket book with a chart but didn't have a calculator , non scientific, until 1971 . I bought it a jc Penny's for $75. Just did basic math . I was working with tool and die makers also . The owner said what are you going to do with a calculator but when he saw how fast I could figure things he required everyone to have one .
On I phones to get to the scientific calculator, select the standard calculator and then rotate 90 degrees clockwise and the scientific calculator appears.
Not so sure about 30.96 degrees! Why? O = 3 A=4 H=5 is a known, given "right angle" triangle of 30, 60, 90 degrees. In this case, project the two triangles over (a=4 over A=5) where you can see the 30 degree triangle is inside, therefore 30 degree angle will be a larger number than the angle in question.
I am old school. I use trigonometry tables and not a calculator. That way I know what I am doing and get degrees, minutes, and seconds. I left High School in 1971.
Why not do a triangle 3 4. 5 so one can check wether one is doing the right thing with simple trig ? That angle is 36.87 or easier 37 degrees …..just a thought
When he solves for the other angle let's see him prove it is a right triangle. In order to be a right triangle the hypotnus should have been 5 and the side that's 5 should have been 4
My preferred methodology was always trigonometry, my fellow students usually had a hard time with it and used The Pitágoras theorem, which I despised, go figure.
Too complicated. Can't understand devision like that 3 / 5 like a foreign language. But my guess without alk the complicated trig bollox is x=30° 60° and 90°
Silly-old-hens-can't-always-have-their-own-acorns. Or Tommy-on-a-ship-overboard-his-coat-and-hat. 50 years since I learned that, might even have a set of log tables somewhere, not used them in decades.
I know you like to simplify like the bowtie method. Have you ever taught Some People Have, Curly Black Hair, Through Propetetuial Brushing? That's all 3 formulas for right angles.
I remember doing this in high school, but that was 30 years ago. I am glad this channel explains it well. My teacher I had didn't do as well. I got an A in the class, but I never really understood what I was doing. I remember looking up on a chart to find out the degree. Could you do a video explaining how that number is calculated instead of just using a chart? Thank you in advance.
Hello, back in the 80's i was in hi school cabarrus catholic college in neg occ ph. I still remembered those abreviations of sine ,cosine and tangent. Calculator was scarce we use the list in a little book trigonometric table.. it was awesome and challenging..
I am glad that I learned how to find an angle with the help of your clear instruction. Thank you so much for your presentation.
this guy probably is the best math teacher...his students are lucky but they probably don't realize that
I interested
He is teaching the use of calculator instead of teaching Trigonometry.
HHHHHmjHHHH
HHHHHmjHHHH
There hhhhhhhh
I dug out my slide rule to see if I remembered how. It took me a while to realize that the T scales were themselves the degree values, and the tangent value is to be found on the C scale. So T is the arc tangent of C, once you figure out which T scale is the appropriate one. I got more than 3 significant digits, but not quite 4.
I learned more about trigonometry here than I did in high-school and my high school years were a long time ago about 40 years ago to be specific.
I really appreciate the simplicity of your lesson. When I was in grade 12 43 years ago, they made it so complex. Just tell us how it is done was what i wanted to blurt out. Thank you. What angle does tan sove or?
He is a very good teacher. Thank you very much.
How about if we forgot to bring calculator and no calculator available around. How to solve it without using calculator?
When I was learning these functions we had no calculators, we had books of trig and log tables.
Yep, I grew up with tables.
ditto
Easy to understand
You just solved my problem. Thanks much
I love trig and I love you too John!
Thanks it really works
how I wish I had teachers who were good at explaining as you do
Is there a way to calculate the inverse tan without a scientific calculator, I am hoping there is a way to work out my latitude by measuring the length of a shadow at solar noon? TY.
I learned how to do this many years ago but with my new calculator I just watched the video to figure out the keys on the darn thing.
Thank you so very much ❤️❤️❤️
I wish I would have been in your class. I had a scientific calculator but had no clue how to use the thing. I dropped trig in college. I’m learning now so maybe I can help my grandkids when the time comes.
FOCUS ON THE WHY? I’m 59 and l agree w most of the posts…”wish l had him as a Math teacher.” Respectfully,kick it up a notch! If you want real IMPACT (however u want to measure it), spend an equal amount of time on what most students are puzzled by on WTF does it matter. Get people to love/yearn math/science’s. Show them how (examples) it impacts life as they would know it. That’s the magic! Again, at 59 with a smaller window of time, there’s a greater appreciation, a hunger for “ what l don’t know…but should.) 😉
@Tabletclass Math how do you find tang without a calculator?
FInd the angle? There it is, in the left hand corner. It's marked with a big 'x'. You cant miss it.
3,4,5, 90deg 60deg 30deg are the angles here. Used to layout squares etc in engineering and building etc. Great thing to know.
Can also use multiples say like 6,8,10.
Ha ha this is not a 3,4 5 triangle it is a 3,5,h triangle h=sqr(9+25) which does not equal 6 but it is close, it is not a 30,60,90 degree right triangle, lol
Can U please do one by finding the side
I did sheet metal layout and had a little pocket book with a chart but didn't have a calculator , non scientific, until 1971 . I bought it a jc Penny's for $75. Just did basic math . I was working with tool and die makers also . The owner said what are you going to do with a calculator but when he saw how fast I could figure things he required everyone to have one .
Cool geometry
Tan@= rise over the run
Tan@= 3/5
x=arctan(3/5) about five seconds to read and answer
Great one
Oscar had a heap of apples and scat opp over hyp. adj over hyp. opp over adj. sine cosine tangent. that's how i learned it.
Thanks.
I had to watch this video three times to understand the operation
On I phones to get to the scientific calculator, select the standard calculator and then rotate 90 degrees clockwise and the scientific calculator appears.
Just came across this video. What does the 5 and 3 mean. Degrees,etc. Can you use different numbers. Beginner.
Not so sure about 30.96 degrees! Why?
O = 3 A=4 H=5 is a known, given "right angle" triangle of 30, 60, 90 degrees.
In this case, project the two triangles over (a=4 over A=5) where you can see the
30 degree triangle is inside, therefore 30 degree angle will be a larger number than the
angle in question.
Remember in this problem H=√34 and still a right triangle
The hypotenuse isnt 5 its sqrt(35) thats why
@@jezchel 5.83
@@jezchel No, H = 6, which is the sq root of 36
@@bwr3rd 25+9=34 not 36.
Thabk you
that is totally mind blowing for me
Have you ever played dungions of dagereth? radieo shake
I am old school. I use trigonometry tables and not a calculator. That way I know what I am doing and get degrees, minutes, and seconds. I left High School in 1971.
why should i try and understand all the things inside the tv set as long as i can push a button and make it come on?
X = arctg 3/5
Yes, and why all this show then? Total fake, to my taste... The author tries to say something, having nothing to say.
Great 👍
Your “this here and that there “ expressions really do fracture the basic English grammar rules.
This could have been a 3 minute video with a 30 second intro
Pythagoras and then sin or tangent table. Learned that in my 7th year.
So why is this even a subject 50 years later.
Ummm... you don't need Pythagoras, and you don't need a Sin table. You do need a Tan table, even the small ones at the back of a basic trig book.
@@argonwheatbelly637 Tks .
Realise that after pressing "send".
In any case wonder how many other caught that
So tan^-1(0.6) is acceptable without a calculator?
What is the formula to find the angle without the use of the calculator, first principle tuition is the best for understanding. Appreciate.
If you use a tangent table it tells you that it's about 30.95°
Why not do a triangle 3 4. 5 so one can check wether one is doing the right thing with simple trig ? That angle is 36.87 or easier 37 degrees …..just a thought
When tan is .6 why have to use arctangent?
Gotta say, “0.6” is better for kids to keep straight
I always used the Sally/Oscar slogan to remember the Sin, Co-sin, Tangent formulas.
@6:26, and we still haven't started. Please get on with it.
Good intentions but hopelessly long winded. Makes it sound far more complex than it is. Norwegian kids have this mastered at 9 years old.
arctang(x) = 3/5 = 30.96
45%
X=tan inverse (3/5).ans
When he solves for the other angle let's see him prove it is a right triangle. In order to be a right triangle the hypotnus should have been 5 and the side that's 5 should have been 4
Sure, that's all well and good but how do I find the angle using my head and a piece of paper and a pencil.
no. I agree, mathematics is a very interesting subject.
x°= arctan 3/5 Ans.
70 %
I'm neutral on this video. If you are lost about this subject then K-han is a good resource. ❤❤❤❤❤
As usual a math teacher thinks everyone is stupid but them .
This is simply a review / help video. You have issues.
You bet I do . I never met anyone that was a math expert that didn't think they were better than anyone .
My preferred methodology was always trigonometry, my fellow students usually had a hard time with it and used The Pitágoras theorem, which I despised, go figure.
we already know all the basics
My iPhone doesn’t have tan-1
Why do people always do triangles in most houses the walls etc are off square or off oblong which ya need to know the angles. This is too complicated
Useless bit: 0:00 - 7:40
Main part: 7:40 - end of video
I don't know but I can see three angles, that's why they call it triangle!! Thah!!!
30 deg. 57min.
30 dgree
30°
It's disappointing; it that My beliefs were : 30, 60 & 90.(3, 4 & 5 Rt. Triangle). Everything I know is wrong(ha-ha).
It's not a 3, 4, 5 triangle. It would be if the hypotenuse was 5, not the adjacent side. The hypotenuse here is sqrt(34).
@@chaoticstarfish3401 Thx Makes more sense now
Too complicated. Can't understand devision like that 3 / 5 like a foreign language. But my guess without alk the complicated trig bollox is x=30° 60° and 90°
Or Spelling? (Division)
Explains some things yes, but didn't explain the missing parts or video could have been shorter.
Easy peezy. Side side
Silly-old-hens-can't-always-have-their-own-acorns.
Or
Tommy-on-a-ship-overboard-his-coat-and-hat.
50 years since I learned that, might even have a set of log tables somewhere, not used them in decades.
I don't know where you got 30.96 , I still got 0.6
Smh Lol 😄
✨
i learned nothing
Same
Gg
To be fair it's more useful for revision. If you're learning from scratch then it maybe confusing for some.
😍😍😍😍
You get a protractor and measure it
I know you like to simplify like the bowtie method. Have you ever taught Some People Have, Curly Black Hair, Through Propetetuial Brushing? That's all 3 formulas for right angles.
math is too complicated for my mind
To much talking about non relative info
Sorry but still couldnt follow it and i had a calculator….
Not worth. !
no calculator please
What a pitty 😜😜
Bro is not a good influencer
Math???? The word is Mathematics! Plural bacause there are many facets. Math??? Learn to speak ENGLISH
everyone says math though