Magnitude and direction of vector sums | Vectors | Precalculus | Khan Academy

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  • Опубліковано 27 гру 2024

КОМЕНТАРІ • 17

  • @danarox236
    @danarox236 10 років тому +1

    Love your vids! Thanks for posting this stuff conveniently around the time when I'm learning it

  • @陈素星-q1u
    @陈素星-q1u 8 років тому +10

    The moment you realize you're supposed to be in geometry, not precalc

    • @wes6382
      @wes6382 8 місяців тому

      I'm here for Trig

  • @gradyking4739
    @gradyking4739 10 років тому +1

    What do you use to draw and stuff?

  • @falleithani5411
    @falleithani5411 3 роки тому +1

    Me: Spends an hour calculating and simplifying the exact magnitude to √(13 - 3√3√2 + 3√2)
    Sal: "Well, it's getting messy, so let me just get the calculator out to get a reasonable approximation."
    Me: Shakes fist and faceplants onto desk. "Gaaahhhrrrrburblebargle!"

    • @quakeev334
      @quakeev334 3 роки тому +1

      Haha, such a relatable and funny moment (LOL)
      this really was very funny, haha (lmao) lol.. lo
      lmaoo haha funny man that kinda good haha funny caption lmaoo LOL rofl lmao haha lol... lmao

    • @falleithani5411
      @falleithani5411 3 роки тому

      @@quakeev334 Don't forget to breathe.

  • @CMacC063
    @CMacC063 7 років тому

    Does anyone see at 2:07 the two larger vectors going horizontally and vertically seem to have the same length, and the same is true for the smaller two vectors.

  • @ballistic6744
    @ballistic6744 8 років тому

    Thanks for this!

  • @malthesrensen4953
    @malthesrensen4953 8 років тому

    4:57 over the length of the adjacent side right?

  • @KLiCuk1
    @KLiCuk1 5 років тому

    or you could use the cosine rule...
    c=sqrt(2^2 + 3^2 - 2x2x3xCos75)

  • @rubelrana304
    @rubelrana304 7 років тому

    thanks

  • @muribe8370
    @muribe8370 7 років тому

    quick question... I thought inverse tangent was (x/y)??

    • @Brandoncbueoy
      @Brandoncbueoy 6 років тому +1

      no thats cotangent, which is 1/tan

  • @disney6858
    @disney6858 10 років тому

    1st