Feels great knowing why equations work instead of just memorizing them. Now during a test I can reason out equations. Makes me really enjoy math.
@PWskates
8 жыл бұрын
+Cihan Barnett RIGHT, they teach it wrong in school
@andrewrafaelkim
5 жыл бұрын
PWskates this is my teacher 😂 she’s having us watch her video for class
@ayoubsbai6339
5 жыл бұрын
@@andrewrafaelkim You are lucky :D
@lcchen3095
4 жыл бұрын
That’s the gist of learning math
@ramseshendriks2445
Жыл бұрын
One, less, you enjoy meth!? Like, what did just happen at the start of maths message! Edit: massagein
@firas0137
3 жыл бұрын
you're a LEGEND, keep up the amazing work.
@dimbanimvula3672
Ай бұрын
That was incredible thank you so much
@shawnjamal9301
8 жыл бұрын
This is great explanation, thank you for putting this up
@AVKLesssons
3 күн бұрын
Thank-you.
@jonydakasks
10 жыл бұрын
Man..... Such an incredible teaching !!! Probalby you love what you're doing, aren't you ;) ?
@annekeirstead1123
10 жыл бұрын
Thanks, and I do love teaching math.
@Xuul
7 ай бұрын
GREAT explanation. THANK YOU!
@himanchalsingh1135
7 жыл бұрын
such a nice explanation..
@pabloandrade5887
6 жыл бұрын
Thank you:)
@YasmineNazmy
4 жыл бұрын
Awesome explanation! Thank you!
@Ensign_Cthulhu
8 жыл бұрын
The bizarre thing is that they chose to "drop" phi from the Z axis down as opposed to making it the intuitive "up" from the "equator" (or in terms of elevation for telescopes, gunlaying, etc). I wonder why this was the case (apart from avoiding negative values).
@Alinakhan0421
9 ай бұрын
Phi is the angle that is made from z- axis to the line of projection of point P. This angle goes from positive z axis to overlying x-y plane then to negative z axis and completes 180 degrees in its pathway.
@hosseinazizi1426
4 жыл бұрын
Beautifully explained. Thanks
@buttegowda
8 жыл бұрын
Thanks a lot. Very well explained.
@marked3382
7 жыл бұрын
really helpful! Thank you very much!!!
@SchrodingersCat637
Жыл бұрын
Thank You!!!!!
@haveanicetime
8 жыл бұрын
Thanks ...Nice work...Truly nice work
@joffiie
Жыл бұрын
Great video!
@varunnegi7202
10 жыл бұрын
your teaching skill is great kudos to that but would've preferred a few tougher numericals.
@michaelmatusowsky3863
10 жыл бұрын
Mind adding times where you actually start talking about spherical coordinates?
@rachitmanas1647
10 жыл бұрын
thanks very easy to remember........
@SamsungSamsung-ns6qe
8 жыл бұрын
thanks ,very helpful.
@nunonavega1043
9 жыл бұрын
For some reason my uni uses the theta for different coordinate angles in spherical and cylindrical, but still very helpful video
@johnbatchler8551
8 жыл бұрын
again thanks for the hieroglyphics of cal 3
@caghey
Жыл бұрын
that helped a lot thanks!
@cpw1769
2 жыл бұрын
Thx!
@Babdulrahim
9 жыл бұрын
Thanks for the excellent video. Just a typo in x-y plane instead of (3 x Squre root of 2)
@protostar1000
9 жыл бұрын
Pretty helpful!
@ramseshendriks2445
Жыл бұрын
Helpfull preetttttttyy!?
@protostar1000
Жыл бұрын
@@ramseshendriks2445 Yes, very helpful back at that time!
@manikantaseelam7604
5 жыл бұрын
She sounds like Sarah sanders 😂🤣😂🤣😂🤣😂 But her explanation is awesome
@FutureAIDev2015
8 жыл бұрын
I'm not sure whether my question applies here, but... Suppose you have a point (lat, lng) on a sphere of radius r, and you also have a point (lat2, lng2) directly "north" of the first point at a distance d. How do you rotate the second point on the sphere, clockwise about the first point, while keeping its distance constant?
@ramseshendriks2445
Жыл бұрын
That's what you do from the center between them.
@JanizSuyko29
9 жыл бұрын
Shouldn't phi be changing along the x-y plane while theta changing vertically? I think you accidentally interchanged phi and theta in your illustration there. Unless, it is just a matter of convention?
@JanizSuyko29
9 жыл бұрын
Sorry. It seems like my reference, Elements of Engineering Electromagnetics by N.N.Rao, uses a different convention.
@jamesrockford2626
9 жыл бұрын
Janiz Suyko You think it wouldn't be too much to ask to have consistency within math rules...but no dice....
@williamchamberlain2263
6 жыл бұрын
Lack of conventions is a pain in the arse
@mahdirezaie891
10 жыл бұрын
tnx from nice teaching !
@noahnemes-lauzier9160
4 ай бұрын
love you anne
@lizmariejoycesical4586
2 жыл бұрын
I thought in cylindrical, it's rho,phi and z
@user-qk5ys7wn3u
5 жыл бұрын
Possible translate to language Arabic now I follow you please
@hosseinazizi1426
4 жыл бұрын
What is the reason physics guys use theta from z axis and make problems worsen
@elissanguyen4744
8 жыл бұрын
ty!!
@kunaldas7808
7 жыл бұрын
hey whats the value of cos45* please check the video
@annekeirstead1123
7 жыл бұрын
root 2 over 2
@Dark-mo7tt
7 жыл бұрын
omg..i almost thought it was Hillary Clinton speaking 😂
@bigtoe_2543
6 жыл бұрын
tashW nice vape videos 😂
@albertramirez7922
7 жыл бұрын
What if your phi angle is a negative?
@johnbatchler8551
8 жыл бұрын
more hieroglyphics
@DonHoltberg-j7g
2 күн бұрын
Dina Key
@tejasreeparasa1252
7 жыл бұрын
can someone tell me how we consider the range of values for theta?
@williamchamberlain2263
6 жыл бұрын
... in rads
@egodinez123123
5 жыл бұрын
Isn’t arctan restricted from -pi/2 to pi/2? 9:14
@egodinez123123
5 жыл бұрын
Yeah I get that, but she says that (3sqrt2, 7pi/4, -7) ((roe, theta, phi)) is also an acceptable answer and I disagree because like you both said arctan range is restricted from -pi/2 to pi/2. Theta should also be in between these values. 7pi/4 is greater than pi/2.
@egodinez123123
5 жыл бұрын
*did not specify range at first, but I meant to say range is restricted*
@egodinez123123
5 жыл бұрын
@@akeirsteadmath So is -pi/4 not the correct representation because theta is from to 0 to 2pi?
@egodinez123123
5 жыл бұрын
@@akeirsteadmath Why not 3pi/4?
@egodinez123123
5 жыл бұрын
@@akeirsteadmath actually I see why it would not be 3pi/4 because that not be pointing at (3,-3) 4th quadrant in xy
@johnbatchler8551
8 жыл бұрын
that might get changed
@rahimulmazumdar7190
8 жыл бұрын
can anybody explain me that how phai is varying from 0 to 180 degree in spherical co ordinate system..????
@tirth5405
8 жыл бұрын
Imagine r and theta (from 0 to 360) as rings. So for each phi we get a corresponding ring on the xyz plane. So now a sphere is made of rings from top to bottom right? ( i.e. phi from 0-180) If u take phi from 0-360 you are counting rings twice. (top to bottom and again bottom to top)
@ashasmith6602
7 жыл бұрын
My calc professor showed me the other day. think of a coin. Lay it flat on the xy-plane. Rotate the coin vertically. You'll see that you only need to rotate that coin half way for it to "create" a spherical shape. you've only rotated that coin 180 degrees which is why you can consider the range from 0 to pi and you could calculate for the entire sphere. Hope that helps
@bobmike828
4 жыл бұрын
9:30 should be 3pi/4
@akku96696
6 жыл бұрын
Great but it would be better if you start pronouncing phi as FAI
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