Adding vectors in magnitude and direction form | Vectors | Precalculus | Khan Academy

[@sunayplayz7990]

Hey Sal, I just want to say I really appreciate all this work you have put in to Khan Academy, it has taught me so much. You are the number 1 person I go to when I need help with anything, so thank you for that!

[@system128]

Wow, as long as you know where sine and cosine goes, this is actually kinda straightforward! Nice video

[@0ogaBooga]

I love how this video made understand the concept of adding vectors as well as learning to use the apple calcualator.

[@minhalrizvi587]

World best teacher Khan sir

[@uber4409]

i love this guy now. within a minute of this video i can answer the other 15/26 of my college physics problems

[@GuildOfTheImmortalBlades]

Is there a video that goes over sin cos and tan ratios ?

[@daikimochiron]

he start doing lesson since start of youtube and he is done yet wow

[@CloroxBleach-ox7cf]

pure passion

[@stephen7583]

nice

[@resourcefolder5295]

what app is that? that your using.?

[@NC_-ew5ck]

I keep coming back jus to help me with school, thank you soooo much

[@takeit1420]

just wanted to point out that ur great

[@racoo06.]

hello I came here since it's been a while that I've seen your videos (I've seen them because my math teacher will show them) how do you right so good on computer?!? Maybe because you have been doing it for a while. Anyways thanks for helping out keep it up!

[@vipul2.032]

Its a writting tab

[@idontknowwhattodoinlife6712]

thank you so so so soo much for this!! This channel is gold. Every content of this channel proves how much knowledge there is and i it's driving me into studying it. Thank you so so so much T . T

[@Bo.Coco.Trinco]

im still curious how one man does all these videos in a lifetime

[@yingandyangplayz867]

There is a formula where you do the square root of the first vector(squared) + second vector(squared) - 2first vector x second vector x cosTAN. Could you explain how this works?

[@KA_edu]

Thank you for correcting the mistakes! This is the second video on the topic; the first video had mistakes. The app still has the old video, fyi

[@thewillandbillshow9375]

You ruined my life sal I’m coming for u I m coming

[@joelynmirasol4128]

2:36

[@l4url4u]

I don't have math subject this year but I just came here bc Khan Academy appeared in a reading exam

[@mohammadnaseeruddinshad5462]

5-(-2)=7. Who can give me the real life example of this sum?

[@davidmurphy563]

Ok, paused. Ok, so if x were a unit vector is would be cos(170) so -0.98. Scale that up, x=3.93. Y is the sin so 0.17. Times by 4 is 0.69. So vec2(3.93, 0.69) I think... Bet it's wrong..

[@davidmurphy563]

Oh, I forgot the other vector... Just send the angle and mag as arguments to a function and return the tuple. That's the job for a computer.

[@davidmurphy563]

ok, this: vec2 polar_to_vec2(float angle, float mag){ return vec2(cos(angle), sin(angle)) * mag } void main(){ vec2 sum = polar_to_vec2(170, 4) + polar_to_vec2(240, 3) float mag = sqrt(pow(sum.x, 2), pow(sum.y, 2)) vec2 dir = sum / mag }

[@mercurius1488]

It's actually 251⁰