Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now: www.khanacademy.org/math/prec... Vector components from magnitude and direction
Пікірлер: 38
@sammanning61783 жыл бұрын
Still the best voice to learn from and so much easier to understand!
@thvtsydneylyf3th0772 жыл бұрын
Just like Nancy Pi
@tldrspidershark6 жыл бұрын
DIRECTION, AND MAGNITUDE OH YEAH
@abbyy.06 Жыл бұрын
vector!! that me. 👍cuz i’m committing crimes with both ✨direction✨ and ✨magnitude✨. OH YEAHH
@loonyhype95272 жыл бұрын
Thanks! Helped me out in physics. I had no idea it’d be this easy. I guess my fear of physics really *is* irrational
@theheartdoctor98865 жыл бұрын
It's really an awesome and amazing video, keep doing more
@shelbyj9472 жыл бұрын
Currently studying for my physics MTEL (licensure for teaching physics) and I wanted to let you know that you have been so helpful! You break down such complex things into basic components. Thank you!
@jaycooper30589 ай бұрын
Bro you have no idea how much you just helped me. My professor is awful and I a cant believe that this entire time finding the magnitudes was just sohcahtoa. I swear i was about to have a mental breakdown because i couldnt even get this.
@sinjinibanerjee_cse_76187 жыл бұрын
hello... I want you to make a video on rectangular components of three dimensions. I having a problem on that particular topic. so will you please do it??
@CMacC0636 жыл бұрын
I saw one of your other videos and you were talking about vector i and vector j, and I had no idea what you were talking about. Now I understand at 8:15
@carultch Жыл бұрын
If you ever wanted to know why we use that particular trio of i/j/k, there is a specific reason for it. You might wonder, does this have anything to do with imaginary numbers? Turns out, it does. Hamilton coined the concept of quaternions that are an extension of imaginary numbers, where each unit vector is a different variant of sqrt(-1), and he called these i/j/k, for "imaginary/joke/kooky". I made that last point up. But he really did see the unit vectors as an extension of imaginary numbers. He wanted quaternions to replace vectors in general, but it didn't catch on. The notation did, which is why we use that trio of letters. I personally prefer x hat / y hat / z hat.
@maximusdizon72678 жыл бұрын
What happened to all those fans???why only 1-2 thousand views? anyway great video SALLLL....:) :) :)
@user-ye3ez4pf9y8 жыл бұрын
اكو عربي هنا ههههههه لو بس اني ^_^ good morning
@humamnissam11028 жыл бұрын
+ضياء فليح صباح الخير حبيبي good afternoon ^_^
@layanmj81965 жыл бұрын
Thank you
@themanmando2857 Жыл бұрын
Thank you.. I'm subscribed😄
@enmasked65052 жыл бұрын
Sal Khan...You ROCK
@elyssawatts7776 жыл бұрын
Thank you!!!
@hmmm9199 Жыл бұрын
THANK YOU SO MUCH
@ARMYSASHEART Жыл бұрын
Thank you so much
@edventure9492 Жыл бұрын
I don't think the first example is a right triangle trigo. The hypotenuse must be c=5 and not 4. Correct me if I'm wrong.
@doingnothing37127 жыл бұрын
you basically cant use tangent because you wont have the opposite or the adjacent
@markrondelicalla44236 жыл бұрын
how about 225°
@gabe52252 жыл бұрын
bakla ka ba
@adawg48375 жыл бұрын
OH YAH!
@bossbaghel53295 жыл бұрын
I want to know that how many components a vector can have?
@hollyanderson59014 жыл бұрын
In two dimensions it has two components, an x and a y
@augustsophomore50423 жыл бұрын
Holly Anderson thanks
@musicbrh31993 жыл бұрын
Can u help me ? I wanted to know that the angle is direction and the length is it's magnitude in a vector diagram ?? Plzz cna u tell the ans.... 🙏
@gabe52252 жыл бұрын
@@hollyanderson5901 THANKS
@carultch Жыл бұрын
Vectors can have as many components as you want them to have. In introductory applications of vectors, it is common to limit them to 2 or 3 components, as they usually correspond to spatial dimensions, and we live in a 3-dimensional universe, thus there isn't a need for a 4th component to represent direction in space. However, there are applications with a lot more components of vectors, such as in relativity, you use 4-component vectors. You might also be using vectors to model hypothetical universes with more dimensions. Or use the components to represent quantities that may have nothing to do with spatial directions. For instance, we take dot products of vectors all the time, when we add up items on a bill. One vector is unit prices, the other vector is quantities of each line item. You have as many components of the vector as you have line items on the bill.
@oktab Жыл бұрын
This is 11th grade stuff in india... maybe its college thing in other countries right?