Adding vectors- a beginners guide

[sarrahsamberg]

Love your ruler, Mr.English man.

Thank you for uploading this!

[Ezunit1991]

how did you know to use tan? why not sin or cos? what if the hypot is opposite?

[randompurple35]

@Ezunit1991 The hypotenuse can never be opposite, because the hypotenuse is always opposite the 90 degree angle in a right triangle, and therefore can never be opposite of one of the two acute angles.

just look up soh cah toa if you want to know when to use sine, cosine, or tangent.

[XxXjehenXxX]

how do you know which angle to find i mean why is the angle at the right and not the one down? please reply! i know how to do pythagoras theorem and trig to figure it out but i get confused WHICH angle to choose? 

[MrZombiefilth]

you were mindblowing...!!!!!!!!!!

[aviral0015]

Why Tan THETA and Don't you have a video of subtracting vectors ! ?

[aviral0015]

Why Tan Theta ?

[bekool1]

its 632.45

therefore it should be 632.5.... not 632.4 km/h

[Shock7061]

WTF

[MrGabheim]

thank you for this great video ,very easy to understand :)

[muffinbreak64]

MAN WILL YOu MARRY ME

[babygurl25392]

i hate my phsyics teacherrrrrrrr

[TheTholomewPlague]

Thanks a bunch for this, I'm doing an A level Physics exam tomorrow and have a good teacher for some units but an awful one for the mathematical side!

I would be eternally greatful if you'd go through a projectile motion (suvat) question in the future?

[McShmooopy]

my Physics teacher is so BLOODY PATRONISING and has an Egg head, so I think thats why he's a dick. Thanks a bunch roger.

[benja303]

my physics teacher is dominican and i can barley understand wtf he is saying =/

[davidallany1]

Why invers of TAN? why not just TAN? can you expain please.

[thezohan2112]

@davidallany1 you had to use inverse tan because it was we had to find the angle. whenver you need to find the angle you have to use inverse of the ratio.

[cacaloveforever]

why did you choose tan and not sin or cos? :/

[McShmooopy]

@cacaloveforever I'll try and explain, A good way I remembered in GCSE Maths is the Phrase Soh-Cah-Toa. The first letters represent Sin, Cos, and Tan amd the following letters represent the lines.

Soh stands for - Sin, Opposite over the Hypotenuse.

Cah stands for - Cos, Adjacent over the Hypotenuse.

Toa stands for - Tan, Opposite over the Adjacent.

Its a great way to remember and I hope it helps.

[cacaloveforever]

@McShmooopy cool! thanks ^_^

[Jayricwalker]

Sir!! where are you teaching I'll go there...(^_^)...My teacher is one of the worst he just gave us the manual and reads it as loud as he can...I CAN DO THAT!!! WE CAN READ!!! anyway, THANKS A LOT!!! your explanation is one of the best... I have seen almost all of your videos...THANKS!! THUMBS UP...AGAIN.

[godofwar691]

very helpful i hav an as physics exam tomorrow and i forgot how to do this so tx gain,

[LehaLavr]

thank you

[DCskate714]

how come you used tan?

i mean if you used sin or cos you have both adj and opp?

2:15

[rwcabrera]

@DCskate714 Because it allowed him to easily find the bearing. Also, should the vector not be a right triangle then you can only use law of sines or cosines which aren't exactly fun, so it just breaks down to relative ease.

[dudeslasher]

because the adj and the opposite are given exactly and if we use the r or hypotenuse for sin or cos then it will be an estimated, since we rounded square root of 400,000. For precision in other words.

[mattg400194]

Very nicely explained. :) Good refresher before I head into a semester of physics again.

[ltbadger]

thank you for a clear and concise video.

minor criticism is the volume of it seemed low but the clarity of explantion was superior

[shebee69]

thank you so much for taking the time to explain for the not so math gifted!

[vegetablesoup6463]

this didnt help what if you have to add three different types of triangles??

[Thesc3ne]

You helped me out so much!!

[snowfallzz]

i'm taking a course where I need to use this. My instructor explained it a bit differently and I'm slowly getting it as I haven't done this shit in about 10yrs and there are other variables involved in what were doing. it's an intro to being a lineman class. So for me I'd rather get the easy to understand route and be right on my lbs, then get jumbled up and fuck up my vectors on a block and line when I'm right next to 7.6k transmission line.

[eileenBrain]

let me guess... the audience is yourself.

[orangecounty283]

haha

he probably narrates his life, on and OFF camera.

[BlackCyril666]

Orangecounty283

Why are you looking up Physics videos and making fun of someone for making videos?

He's Obviously Educated unlike you,you idiotic waste of Matter.

[TheHaitian145]

waste of time..not vectors at all

[ladiesman21747]

I do believe you are wrong. This is a vector, do you do physics because a vector is shown by an arrow deppending on it magnitude and direction and when adding vectors and after drawing tthe vector that are in this case effecting the planes direction you do tip to tail and that is what this guy is doing so what are you talking about.

[ohyahers]

wow, that was the best 3 minutes of my life! thank you!

[BellaLowe]

nice ruler, give explanation!

[sairahiqbal]

i agree with 8hotchocolate8 . my teacher didn't explain this properly to me either. thanx for the exemple. =D

[LisaLy90]

Thanks!

[bigredroosta]

Hah you mucked up! you rounded the answer incorrectly, it is 632.5

[sarahhodges]

Great help thanks

[1sputnic]

Very good! Thanks.

[yonmoore]

Good example and nice accent. This helps a lot. Thanks for posting.

[VPMusiconline]

why is his accent relevant?

[yonmoore]

I just enjoy hearing different accents from different places. So the short answer to your question is, it's not relevant, I just like to hear different accents.

[8hotchocolate8]

thanks so much you explain it far better than my physics teacher.

could you pleaaaaase do more videos on AS physics especially forces and motion ... i'm failing physics :( please :(

i beg you!

[fizzicsorg]

I,ll try but it is a slow process.

Roger at fizzicsorg

[diveka7]

thank you, i never thought that you tube would have such kind of information.

[kenspin]

Very concise!!

[solamisandwich]

Pythags theorem...ahhhh, well duh. took forever to find that justification. youtube is awsome!

[jaqjony]

Ah thanx alot 4 uploading dis vdo

[TADSunitONE]

my physics teacher is so shit that she actually told us to watch this video because she cant teach. im glad that she did direct the class to you though, because the video was great!!

anyway, i was wondering if you would like to be our new physics teach? please? ill pay you triple what you earn at the moment!!

*sob* i just want to learn *sob*

[natsu76]

she should quit teaching :(

[TADSunitONE]

she only has a one year contract with the school. lol. everyone complained so much our science subject coordinator is supposedly gonna rip up the contract at the end of the year. haha.

[JordanMedina]

this is an awesome video. Funny thing is I think I was subconciously taught how to do vectors by Richard Feynman in his book QED, which explains light, electrons, and other interactions of quantumelectrodynamics. He uses a method of attatching arrows which represent amplitudes. The final arrow connects the first and last arrow and the square of this arrow is the probability of an event happening. I didn't even realize that this method was using vectors! Tricky Mr. Feynman.

[RipPhilOdonnell]

A2 maths not AS

[fizzicsorg]

Depends which syllabus and which board you are studying for.

Roger at fizzics org

[MnemicFan]

Cheers man, got my exam in 4 hours and your videos are helps loads.

[stephenpprice]

thanks for that, refreshed my mind for my AS physics exam in two days

[Foggles]

Thanks so much! This is really helpful. I have my AS physics exam coming up in just over a week and I have a really bad physics teacher so I've been struggling.

I also want to be an air traffic controller so this question is quite relevant. Thanks again!

[03jackp]

very well explained thanks alot

[xheyitssam]

love the ruler that you use!

[TKraftwert]

Very nice video.

[deathlorddd]

whoa. good one.