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DominiRican1013

  • one year ago

Which of the following vectors are orthogonal to (2,1)? A. (1,2) B. (-3,6) C. (-2,-3) D. (1,-2)

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  1. DominiRican1013
    • one year ago
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    @ganeshie8

  2. DominiRican1013
    • one year ago
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    @jamesr

  3. DominiRican1013
    • one year ago
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    @dan815

  4. anonymous
    • one year ago
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    YOLO

  5. DominiRican1013
    • one year ago
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    -.-

  6. anonymous
    • one year ago
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    yess

  7. DominiRican1013
    • one year ago
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    I need help

  8. anonymous
    • one year ago
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    ight whts up

  9. DominiRican1013
    • one year ago
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    Is it B and D then

  10. ChillOut
    • one year ago
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    Do you remember the condition to be orthogonal?

  11. ChillOut
    • one year ago
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    I.E. the dot product.

  12. anonymous
    • one year ago
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    aww ship i got to catch up

  13. DominiRican1013
    • one year ago
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    Yes but is B and D

  14. anonymous
    • one year ago
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    i say its D

  15. DominiRican1013
    • one year ago
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    It was right thanks though

  16. anonymous
    • one year ago
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    what, D

  17. ChillOut
    • one year ago
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    \[\vec{a}^{\,}\cdot\vec{b}^{\,}=0 \rightarrow \sum_{1}^{i}a_{i}b_{i} = 0\] This is what you need to use.

  18. dan815
    • one year ago
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    hey orthogonal means these vectors are at 90 degree angle

  19. dan815
    • one year ago
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    othogonal or perpendicular

  20. dan815
    • one year ago
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    the slope for the vector given <2,1> Slope= 1/2 = and a perpendicular slope to that would be 2/-1 =-2 which is the "negative reciprocal" of 1/2 we can see the slopes of each vectors given see which of those simplify to -2 slope A)(1,2) slope = 2/1=2 B. (-3,6) Slope=6/-3=2/-1=-2 <-------- C. (-2,-3) Slope= -3/-2=3/2 D. (1,-2) Slope=-2/1 =-2 <------------ So you are right

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